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Chat Area => General Discussion Area => Topic started by: Field Marshal Dr. Opti on 19 December 2020, 15:00:20

Title: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 19 December 2020, 15:00:20
Petrol in the tank and getting through. Enough to make the plug wet.

Big fat spark at the plug. I've tried another plug, also with a big juicy spark.

SFA.....not even a cough or a splutter.
Title: Re: Why won't my mower start?
Post by: Nick W on 19 December 2020, 15:42:52
How old is the fuel?


As it's only a mower don't answer that, just dump whatever fuel is in the tank and flush the carb with fresh petrol.


While you have the plug out(that's how you know it has a spark), put your finger over the hole and check for compression.
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 19 December 2020, 15:56:58
How old is the fuel?


As it's only a mower don't answer that, just dump whatever fuel is in the tank and flush the carb with fresh petrol.


While you have the plug out(that's how you know it has a spark), put your finger over the hole and check for compression.

The fuel is new. I've taken the shitty plastic carb off and cleaned it out with fresh petrol.

I'll check for compression but it was fine when I last used it a couple of months ago.
Title: Re: Why won't my mower start?
Post by: Migv6 le Frog Fan on 19 December 2020, 16:05:46
Cambelt snapped.  :y
Why do you want to use a mower in December ?
Title: Re: Why won't my mower start?
Post by: STEMO on 19 December 2020, 16:06:34
Cambelt snapped.  :y
Why do you want to use a mower in December ?
It's the highlight of the year in those parts 😂
Title: Re: Why won't my mower start?
Post by: Migv6 le Frog Fan on 19 December 2020, 16:09:14
I thought they would be digging up their carrots & sprouts ready for Christmas.  :)
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 19 December 2020, 16:09:32
Cambelt snapped.  :y
Why do you want to use a mower in December ?

Yeah...I know. I need a mower in December to cut the grass I should have cut in Sept/Oct. There is some long grass where rats are hiding. Rats that are chewing through the wiring on the Tata and the mighty Signum.
Title: Re: Why won't my mower start?
Post by: STEMO on 19 December 2020, 16:12:41
I thought they would be digging up their carrots & sprouts ready for Christmas.  :)
Maybe next week, too much excitement in one day isn't good for the old fella.😁
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 19 December 2020, 16:14:29
I thought they would be digging up their carrots & sprouts ready for Christmas.  :)
Maybe next week, too much excitement in one day isn't good for the old fella.😁

I'm decades younger than you and younger than the Irish fella.
Title: Re: Why won't my mower start?
Post by: STEMO on 19 December 2020, 16:15:52
I thought they would be digging up their carrots & sprouts ready for Christmas.  :)
Maybe next week, too much excitement in one day isn't good for the old fella.😁

I'm decades younger than you and younger than the Irish fella.
In actual years, maybe, but I was talking about brain age. You need to stimulate the grey matter, not be reading last years news. 😆
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 19 December 2020, 16:18:09
I thought they would be digging up their carrots & sprouts ready for Christmas.  :)
Maybe next week, too much excitement in one day isn't good for the old fella.😁

I'm decades younger than you and younger than the Irish fella.
In actual years, maybe, but I was talking about brain age. You need to stimulate the grey matter, not be reading last years news. 😆

No maybe about it. I believe you are a couple of years older than Ronny.
Title: Re: Why won't my mower start?
Post by: STEMO on 19 December 2020, 16:19:34
I thought they would be digging up their carrots & sprouts ready for Christmas.  :)
Maybe next week, too much excitement in one day isn't good for the old fella.😁

I'm decades younger than you and younger than the Irish fella.
In actual years, maybe, but I was talking about brain age. You need to stimulate the grey matter, not be reading last years news. 😆

No maybe about it. I believe you are a couple of years older than Ronny.
You are mistaken, of course, but that will be the senility.
Title: Re: Why won't my mower start?
Post by: Sir Tigger KC on 19 December 2020, 16:23:00
Didn't you know that petrol mowers hibernate in the winter M'lud?  :)

You need an electric one!  :y
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 19 December 2020, 16:25:03
Didn't you know that petrol mowers hibernate in the winter M'lud?  :)

You need an electric one!  :y

Had one....with two fifty metre leads. Still not enough. Petrol is the answer, especially for cars.
Title: Re: Why won't my mower start?
Post by: Migv6 le Frog Fan on 19 December 2020, 16:49:47
You need a cage trap, a bucket of water and also an air rifle.  ;)
Title: Re: Why won't my mower start?
Post by: Sir Tigger KC on 19 December 2020, 16:58:18
Didn't you know that petrol mowers hibernate in the winter M'lud?  :)

You need an electric one!  :y

Had one....with two fifty metre leads. Still not enough. Petrol is the answer, especially for cars.

Obviously not or you'd have been out mowing your lawn rather than asking us why your mower won't start!  ;D

Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 19 December 2020, 17:26:28
How old is the fuel?


As it's only a mower don't answer that, just dump whatever fuel is in the tank and flush the carb with fresh petrol.


While you have the plug out(that's how you know it has a spark), put your finger over the hole and check for compression.

Are you thinking a sticking valve may be a possibility, Nick?

Back in the seventies my highly tuned 2 stroke bikes would lose compression with holed pistons......but I hardly think that is likely on a plodding 4 stroke mower.
Title: Re: Why won't my mower start?
Post by: Nick W on 19 December 2020, 19:01:13
How old is the fuel?


As it's only a mower don't answer that, just dump whatever fuel is in the tank and flush the carb with fresh petrol.


While you have the plug out(that's how you know it has a spark), put your finger over the hole and check for compression.

Are you thinking a sticking valve may be a possibility, Nick?

Back in the seventies my highly tuned 2 stroke bikes would lose compression with holed pistons......but I hardly think that is likely on a plodding 4 stroke mower.


More like sticky rings.


But I'm sure you know more about those than I do :o
Title: Re: Why won't my mower start?
Post by: ronnyd on 19 December 2020, 20:37:15
I thought they would be digging up their carrots & sprouts ready for Christmas.  :)
Maybe next week, too much excitement in one day isn't good for the old fella.😁

I'm decades younger than you and younger than the Irish fella.
In actual years, maybe, but I was talking about brain age. You need to stimulate the grey matter, not be reading last years news. 😆

No maybe about it. I believe you are a couple of years older than Ronny.
He must be bloody old then> ;D
Title: Re: Why won't my mower start?
Post by: Keith ABS on 20 December 2020, 07:40:36
 Its the winter hibernation time for mowers.
Mine would not start either a fortnight ago
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 20 December 2020, 13:02:00
How old is the fuel?


As it's only a mower don't answer that, just dump whatever fuel is in the tank and flush the carb with fresh petrol.


While you have the plug out(that's how you know it has a spark), put your finger over the hole and check for compression.

Are you thinking a sticking valve may be a possibility, Nick?

Back in the seventies my highly tuned 2 stroke bikes would lose compression with holed pistons......but I hardly think that is likely on a plodding 4 stroke mower.


More like sticky rings.


But I'm sure you know more about those than I do :o

Yes...rings certainly need lubrication to encourage smooth up and down movement of a large piston.
Title: Re: Why won't my mower start?
Post by: STEMO on 20 December 2020, 13:03:06
How old is the fuel?


As it's only a mower don't answer that, just dump whatever fuel is in the tank and flush the carb with fresh petrol.


While you have the plug out(that's how you know it has a spark), put your finger over the hole and check for compression.

Are you thinking a sticking valve may be a possibility, Nick?

Back in the seventies my highly tuned 2 stroke bikes would lose compression with holed pistons......but I hardly think that is likely on a plodding 4 stroke mower.


More like sticky rings.


But I'm sure you know more about those than I do :o

Yes...rings certainly need lubrication to encourage smooth up and down movement of a large piston.
Eeeeeeee....yer dirty bastid 🤪
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 20 December 2020, 13:04:19
I thought they would be digging up their carrots & sprouts ready for Christmas.  :)
Maybe next week, too much excitement in one day isn't good for the old fella.😁

I'm decades younger than you and younger than the Irish fella.
In actual years, maybe, but I was talking about brain age. You need to stimulate the grey matter, not be reading last years news. 😆

No maybe about it. I believe you are a couple of years older than Ronny.
He must be bloody old then> ;D

He is of biblical age. His lad is just waiting for the 'inevitable'.  :)

Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 20 December 2020, 13:05:46
How old is the fuel?


As it's only a mower don't answer that, just dump whatever fuel is in the tank and flush the carb with fresh petrol.


While you have the plug out(that's how you know it has a spark), put your finger over the hole and check for compression.

Are you thinking a sticking valve may be a possibility, Nick?

Back in the seventies my highly tuned 2 stroke bikes would lose compression with holed pistons......but I hardly think that is likely on a plodding 4 stroke mower.


More like sticky rings.


But I'm sure you know more about those than I do :o

Yes...rings certainly need lubrication to encourage smooth up and down movement of a large piston.
Eeeeeeee....yer dirty bastid 🤪

140cc......almost 3 mopeds.
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 20 December 2020, 13:46:49
How old is the fuel?


As it's only a mower don't answer that, just dump whatever fuel is in the tank and flush the carb with fresh petrol.


While you have the plug out(that's how you know it has a spark), put your finger over the hole and check for compression.

Are you thinking a sticking valve may be a possibility, Nick?

Back in the seventies my highly tuned 2 stroke bikes would lose compression with holed pistons......but I hardly think that is likely on a plodding 4 stroke mower.


More like sticky rings.


But I'm sure you know more about those than I do :o

With regard to compression......

I have used my thumb as a 'butt plug' and can confirm there is plenty.
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 20 December 2020, 15:38:02
I'm wondering.

Petrol in tank which is reaching the carb, which 'appears' to make the plug wet. Spark is 'reasonable but not that 'fat and juicy'

Is it possible the integrated HT lead/coil is not quite good enough, and the spark from the plug is being snuffed out under compression before it has the chance to ignite the petrol/air mix?

Title: Re: Why won't my mower start?
Post by: Nick W on 20 December 2020, 15:56:48
It's possible, but proving it won't be easy.
I'd still be looking at the carb before going any further, and then move onto the timing.
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 20 December 2020, 16:15:02
It's possible, but proving it won't be easy.
I'd still be looking at the carb before going any further, and then move onto the timing.

Thanks, Nick. I'll take the carb apart and see if any filters or jets within it are blocked. I did think the plug would be wetter than it is considering how many times I've tried to get the bastard started.

The carb is made of plastic.

It looks as though I can buy the HT/coil combo from Ebay for about £15. The mower is only 3 years old.
Title: Re: Why won't my mower start?
Post by: dave the builder on 20 December 2020, 16:59:52
could well be the diaphragm that pumps the fuel if it's B&S junk
Title: Re: Why won't my mower start?
Post by: YZ250 on 20 December 2020, 17:24:30
They can be temperamental bastids when not used regularly. I doubt it's timing or HT related as it was running when you switched it off. Check that mice haven't nibbled the fuel line, plunger bulb or HT lead. Timing is only usually an issue if you've hit something hard with the blade, which sheers the woodruff key, and then the crankshaft slips out of place to the timing plate.
Normally a good spin with the starter rope is enough to get them going but carb issues are generally the culprit. You also have to be careful which way you tip a petrol mower as the oil will find every little hole in the engine. My wife tipped our Toro on its front to free the blade from clogged grass and then wondered why it wouldn't start again. I cleaned the carb and tried starting it until my shoulder gave up. Luckily, when you remove the top cover of a Toro you can see the crank nut that the rope coil sits on. A socket on an adapted extension, fitted in a decent drill, will start it in seconds if all is ok. Dangerous but effective.
Carbs don't wear out as they are such low pressure fuel flow on these, but many change them as they think it's the cure. I'm yet to replace one, even on mowers over thirty years old. What engine is it, Briggs and Stratton ??  if so, what series is it (Usually on the engine cover) as I need to know what carb it has on it. Some are a resonating fuel diaphragm, and some have a proper bowl. The resonating diaphragm can be manipulated by hand to give it movement, as they go a bit stiff when not used regularly.
Are you using the rope pull in the rope guide on the handle. If so, remove the rope from the handle guide and pull from the engine as you get more revolutions per pull.
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 20 December 2020, 17:47:42
Thanks chaps......I've just spent 25 minutes watching a 'carb clean' video on Youtube.

It has been getting harder to start. I noticed in the video that my carb does not have the spring on top that seems to open and close the butterfly.
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 20 December 2020, 17:49:23
https://youtu.be/joDmD0oOlJ0 (https://youtu.be/joDmD0oOlJ0)
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 20 December 2020, 17:55:10
They can be temperamental bastids when not used regularly. I doubt it's timing or HT related as it was running when you switched it off. Check that mice haven't nibbled the fuel line, plunger bulb or HT lead. Timing is only usually an issue if you've hit something hard with the blade, which sheers the woodruff key, and then the crankshaft slips out of place to the timing plate.
Normally a good spin with the starter rope is enough to get them going but carb issues are generally the culprit. You also have to be careful which way you tip a petrol mower as the oil will find every little hole in the engine. My wife tipped our Toro on its front to free the blade from clogged grass and then wondered why it wouldn't start again. I cleaned the carb and tried starting it until my shoulder gave up. Luckily, when you remove the top cover of a Toro you can see the crank nut that the rope coil sits on. A socket on an adapted extension, fitted in a decent drill, will start it in seconds if all is ok. Dangerous but effective.
Carbs don't wear out as they are such low pressure fuel flow on these, but many change them as they think it's the cure. I'm yet to replace one, even on mowers over thirty years old. What engine is it, Briggs and Stratton ??  if so, what series is it (Usually on the engine cover) as I need to know what carb it has on it. Some are a resonating fuel diaphragm, and some have a proper bowl. The resonating diaphragm can be manipulated by hand to give it movement, as they go a bit stiff when not used regularly.
Are you using the rope pull in the rope guide on the handle. If so, remove the rope from the handle guide and pull from the engine as you get more revolutions per pull.

It's a  Qualcast 51cm petrol S/P... supposedly with a B and S engine. About 3 years old.

XSZ51C-SD, The carb looks very much like the one in the video.
Title: Re: Why won't my mower start?
Post by: YZ250 on 21 December 2020, 14:06:58
.............
It's a  Qualcast 51cm petrol S/P... supposedly with a B and S engine. About 3 years old.

XSZ51C-SD, The carb looks very much like the one in the video.

Briggs and Stratton 625e Series engine then, with a proper carb (albeit plastic) so no diaphragm. All you can really do is clean the carb as per the video. Wire strands are good for this, you don't need any fancy gadgets or jet brushes.  If you have a spark, the engine kill must be working as intended, so no issue there. If it has a kill bar on the handle, tie it up so that you can concentrate on the rope pull better. I have had some success (mainly with 2 strokes admittedly) running a blow lamp across the plug to dry it out/ warm it up. Once you eventually get it going, it should start fine on subsequent fire ups. As said previously, pull the rope directly from the engine to get more revolutions per pull, not through the handle rope guide.
Only other thing I can think of, as it has a carb with a float bowl it has no primer bulb, so I assume it has auto choke. Try to see if this is working ok. It normally operates with a seperate rod connected to the top of the carb, and gradually turns back as it warms up. Shame you can't drill start it, that takes all the hard work out of it, although in saying that the choke still has to work. (Insert thumbs up smiley here when those evil Christmas smileys have gone)
Good luck.
Title: Re: Why won't my mower start?
Post by: YZ250 on 21 December 2020, 14:36:47
Also, before you rip it apart, remove the air filter and check the butterfly position. It should be fully closed when cold. If it's not, ping it back closed with a screwdriver and try starting it again.
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 21 December 2020, 14:50:57
YZ250.....thanks for this. You are a man who knows his mowers. :)
Title: Re: Why won't my mower start?
Post by: Nick W on 21 December 2020, 14:54:40
Blowtorch to dry out a plug is OK. But you can do all six simultaneously on a ring of the gas stove....
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 21 December 2020, 15:12:50
What about the missing spring from the top of the carb that (I think) controls the butterfly. Can I still start the mower if I don't have it?
Title: Re: Why won't my mower start?
Post by: YZ250 on 21 December 2020, 15:16:54
Blowtorch to dry out a plug is OK. But you can do all six simultaneously on a ring of the gas stove....

 :y
Quite right.

On 2 strokes, you can test the push, pop, bang workings by leaving the spark plug in the HT lead, but out of the hole resting on the cylinder, pull the cord or the kick start and watch flames fly out of the plug hole. You can then say, Yep, that's all good so it should start.  ;D ;D
Title: Re: Why won't my mower start?
Post by: YZ250 on 21 December 2020, 15:19:34
What about the missing spring from the top of the carb that (I think) controls the butterfly. Can I still start the mower if I don't have it?

Use an elastic band to hold the choke closed just to try it. If it starts, you can then sort out any missing bits.  :y  Check that the butterfly is fully closed before attempting to start it.  :y
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 21 December 2020, 15:28:33
What about the missing spring from the top of the carb that (I think) controls the butterfly. Can I still start the mower if I don't have it?

Use an elastic band to hold the choke closed just to try it. If it starts, you can then sort out any missing bits.  :y  Check that the butterfly is fully closed before attempting to start it.  :y

Will do. I have just taken the carb off and I'm getting a perverse pleasure from stinking of petrol. ;D
Title: Re: Why won't my mower start?
Post by: TheBoy on 21 December 2020, 15:30:38
I'm getting a perverse pleasure from stinking of petrol. ;D
When you were a nipper, and dad was filling up with 4 star, did you used to unwind the window so you could smell it?


Obviously, I never did that. Not me. Nah. Well, not often.
Title: Re: Why won't my mower start?
Post by: YZ250 on 21 December 2020, 15:36:11
What about the missing spring from the top of the carb that (I think) controls the butterfly. Can I still start the mower if I don't have it?

Use an elastic band to hold the choke closed just to try it. If it starts, you can then sort out any missing bits.  :y  Check that the butterfly is fully closed before attempting to start it.  :y

Will do. I have just taken the carb off and I'm getting a perverse pleasure from stinking of petrol. ;D

 ;D ;D

I know what you mean.  :y  If I recall, the plastic carbs don't have a drain plug in the bowl like the aluminium type, so if you tip them over petrol pisses out. I've never been able to work in gloves so with all of what my skin has absorbed I've got no chance of a long life.  ;D
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 21 December 2020, 16:34:07
I'm getting a perverse pleasure from stinking of petrol. ;D
When you were a nipper, and dad was filling up with 4 star, did you used to unwind the window so you could smell it?


Obviously, I never did that. Not me. Nah. Well, not often.

Yeah....loved it. 5 star though. :)
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 21 December 2020, 16:37:26
I have cleaned all the jets ( in fact any orifice I can find) with a needle. It is now sitting in fresh petrol. I shall give it an hour or so before putting it back together. It looked pretty clean but I'm hoping it will behave when I come to start it.
Title: Re: Why won't my mower start?
Post by: STEMO on 21 December 2020, 17:28:09
I have cleaned all the jets ( in fact any orifice I can find) with a needle. It is now sitting in fresh petrol. I shall give it an hour or so before putting it back together. It looked pretty clean but I'm hoping it will behave when I come to start it.
It will start tonight, in the dark, and then refuse again when you go to use it.  :)
Title: Re: Why won't my mower start?
Post by: Sir Tigger KC on 21 December 2020, 17:31:02
Occasionally I think about getting a petrol mower, but then a thread like this pops up....  ;D
Title: Re: Why won't my mower start?
Post by: Drewomega on 21 December 2020, 17:37:19
Drop a little squirt of petrol in the cylinder before you put plug back in (not too much tho) then try that. If it fires it must be the carb that is at fault.  :y
Title: Re: Why won't my mower start?
Post by: STEMO on 21 December 2020, 17:39:06
If two, 50 metre leads are not long enough to get to the far reaches of his garden, you'd think he'd pay a gardener. Probably frightened of Mrs Opti clapping eyes on a semi naked, sweaty young male cavorting outside her bedroom window.
Title: Re: Why won't my mower start?
Post by: Kevin Wood on 21 December 2020, 18:20:34
Occasionally I think about getting a petrol mower, but then a thread like this pops up....  ;D
That's why you need a collection of petrol mowers, not just one. :y

I'm still using a 1995 Murray Ohio that my little brother chucked in a skip because it wouldn't start. ::)

Some fresh petrol and a service and it starts on the first pull every time.
Title: Re: Why won't my mower start?
Post by: TheBoy on 21 December 2020, 18:47:04
I'm getting a perverse pleasure from stinking of petrol. ;D
When you were a nipper, and dad was filling up with 4 star, did you used to unwind the window so you could smell it?


Obviously, I never did that. Not me. Nah. Well, not often.

Yeah....loved it. 5 star though. :)
When I was young, Mum had a little Italian sporty number that would only run on 5 star, which only 1 station in the area sold, from a special pump round the back.

Obviously I never unwound the window. Much ;D
Title: Re: Why won't my mower start?
Post by: YZ250 on 21 December 2020, 19:04:29
...........
That's why you need a collection of petrol mowers, not just one. :y

I'm still using a 1995 Murray Ohio that my little brother chucked in a skip because it wouldn't start. ::)

Some fresh petrol and a service and it starts on the first pull every time.

Is that a ride-on Kevin (Guessing maybe not if he threw it in a skip ;D ). I got the school Murray ride-on going back in the summer. The grounds keeper asked my Mrs if I'd have a look at it as she works at the school. This one had a Briggs and Stratton engine in but was labelled on the body as Murray.  :'(  It's their spare ride-on, with the Grillo being the main one. Mice had chewed the ignition wire on the Murray.  ;D
Title: Re: Why won't my mower start?
Post by: Kevin Wood on 21 December 2020, 19:27:42
...........
That's why you need a collection of petrol mowers, not just one. :y

I'm still using a 1995 Murray Ohio that my little brother chucked in a skip because it wouldn't start. ::)

Some fresh petrol and a service and it starts on the first pull every time.

Is that a ride-on Kevin (Guessing maybe not if he threw it in a skip ;D ). I got the school Murray ride-on going back in the summer. The grounds keeper asked my Mrs if I'd have a look at it as she works at the school. This one had a Briggs and Stratton engine in but was labelled on the body as Murray.  :'(  It's their spare ride-on, with the Grillo being the main one. Mice had chewed the ignition wire on the Murray.  ;D

No, this one's just a rotary push-along job.
Title: Re: Why won't my mower start?
Post by: YZ250 on 21 December 2020, 19:32:32
...........
That's why you need a collection of petrol mowers, not just one. :y

I'm still using a 1995 Murray Ohio that my little brother chucked in a skip because it wouldn't start. ::)

Some fresh petrol and a service and it starts on the first pull every time.

Is that a ride-on Kevin (Guessing maybe not if he threw it in a skip ;D ). I got the school Murray ride-on going back in the summer. The grounds keeper asked my Mrs if I'd have a look at it as she works at the school. This one had a Briggs and Stratton engine in but was labelled on the body as Murray.  :'(  It's their spare ride-on, with the Grillo being the main one. Mice had chewed the ignition wire on the Murray.  ;D

No, this one's just a rotary push-along job.

 :y
Title: Re: Why won't my mower start?
Post by: ronnyd on 21 December 2020, 22:13:28
I'm getting a perverse pleasure from stinking of petrol. ;D
When you were a nipper, and dad was filling up with 4 star, did you used to unwind the window so you could smell it?


Obviously, I never did that. Not me. Nah. Well, not often.
Love the smell of Castrol R. :y
Title: Re: Why won't my mower start?
Post by: Shackeng on 22 December 2020, 07:56:18
Cleveland Discol and Castrol R, used to run my Ariel scrambler. Exotic smells.  :y
Title: Re: Why won't my mower start?
Post by: Rangie on 22 December 2020, 08:02:33
Had a similar problem with mine a couple of years ago, took it in to our local mower service centre collected it a couple of days later after a service, the fellow in there told me that the problem was the diaphragm which was disintegrating, haven't got a clue what that is but the mower has not missed a beat since.
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 22 December 2020, 15:22:25
Ok.....this is really stating to get om my tits now.

Carb back on.

Plug now soaking wet with petrol but not even a hint that it is trying to fire. Three new plugs. All sparking but will not ignite the petrol. 
Title: Re: Why won't my mower start?
Post by: ronnyd on 22 December 2020, 15:28:16
Ok.....this is really stating to get om my tits now.

Carb back on.

Plug now soaking wet with petrol but not even a hint that it is trying to fire. Three new plugs. All sparking but will not ignite the petrol. 
Get your Philipino house boy to cut it with some nail scissors. :)
Title: Re: Why won't my mower start?
Post by: Migv6 le Frog Fan on 22 December 2020, 15:39:53
He could then catch the offending rats and have them for Christmas dinner.  :y ;D
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 22 December 2020, 16:35:30
I have cut away part of the plastic cover so I can get to the carb without having to undo the bolts and take it off every time.

Here is the thing.....The butterfly is closed and remains closed. By pinning it wide open with a clothes peg it finally started and ran for about 5 minutes.

Getting better. :y
Title: Re: Why won't my mower start?
Post by: Kevin Wood on 22 December 2020, 18:24:14
If you mean the throttle butterfly it should be held open by a spring at rest.
When running a governor mechanism in the crank case or an air flap in the cooling nacelle closes it against the spring to regulate the speed. Maybe the spring has fallen off?
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 22 December 2020, 18:30:10
If you mean the throttle butterfly it should be held open by a spring at rest.
When running a governor mechanism in the crank case or an air flap in the cooling nacelle closes it against the spring to regulate the speed. Maybe the spring has fallen off?

Yes...the spring is gone, reply 37. I was told to start the mower with the butterfly closed. Which I couldn't.
Title: Re: Why won't my mower start?
Post by: YZ250 on 22 December 2020, 19:18:14
If you mean the throttle butterfly it should be held open by a spring at rest.
When running a governor mechanism in the crank case or an air flap in the cooling nacelle closes it against the spring to regulate the speed. Maybe the spring has fallen off?

Yes...the spring is gone, reply 37. I was told to start the mower with the butterfly closed. Which I couldn't.

You got me wondering now.  ;D

Just been out and started my mower.  ;D  Popped the air box off and shone a torch up the air intake when the mower was cold and prior to starting it. The butterfly was fully closed (as in blocking air from entering the carb). As it warmed up it opened the butterfly to allow air in to the carb. As a double check I looked at my strimmer and the bike, which both have a manual choke. When I flicked the lever to choke, it blocked the air from entering the carb, just the same as the mower. Choke being rich, air being lean.
As a triple check I looked on YouTube.  ;D

https://youtu.be/aNi9sJA4PFI

Incidentally, it may start without choke but will struggle to rev until warmed up.  :y
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 22 December 2020, 19:40:14
If you mean the throttle butterfly it should be held open by a spring at rest.
When running a governor mechanism in the crank case or an air flap in the cooling nacelle closes it against the spring to regulate the speed. Maybe the spring has fallen off?

Yes...the spring is gone, reply 37. I was told to start the mower with the butterfly closed. Which I couldn't.

You got me wondering now.  ;D

Just been out and started my mower.  ;D  Popped the air box off and shone a torch up the air intake when the mower was cold and prior to starting it. The butterfly was fully closed (as in blocking air from entering the carb). As it warmed up it opened the butterfly to allow air in to the carb. As a double check I looked at my strimmer and the bike, which both have a manual choke. When I flicked the lever to choke, it blocked the air from entering the carb, just the same as the mower. Choke being rich, air being lean.
As a triple check I looked on YouTube.  ;D

https://youtu.be/aNi9sJA4PFI

Incidentally, it may start without choke but will struggle to rev until warmed up.  :y

Thanks. That is a great video. The carb is exactly the same as mine.

With the butterfly closed mine simply refused to start, which was why I pegged the mechanism to hold the butterfly fully open. It then started. The exact opposite to what should happen it seems. Perhaps if the weather was colder the butterfly would need to be shut.

I need to get a new spring.

Perhaps my carb is running 'super rich'

Title: Re: Why won't my mower start?
Post by: Entwood on 22 December 2020, 20:39:46
If you mean the throttle butterfly it should be held open by a spring at rest.
When running a governor mechanism in the crank case or an air flap in the cooling nacelle closes it against the spring to regulate the speed. Maybe the spring has fallen off?

Yes...the spring is gone, reply 37. I was told to start the mower with the butterfly closed. Which I couldn't.

You got me wondering now.  ;D

Just been out and started my mower.  ;D  Popped the air box off and shone a torch up the air intake when the mower was cold and prior to starting it. The butterfly was fully closed (as in blocking air from entering the carb). As it warmed up it opened the butterfly to allow air in to the carb. As a double check I looked at my strimmer and the bike, which both have a manual choke. When I flicked the lever to choke, it blocked the air from entering the carb, just the same as the mower. Choke being rich, air being lean.
As a triple check I looked on YouTube.  ;D

https://youtu.be/aNi9sJA4PFI

Incidentally, it may start without choke but will struggle to rev until warmed up.  :y

Thanks. That is a great video. The carb is exactly the same as mine.

With the butterfly closed mine simply refused to start, which was why I pegged the mechanism to hold the butterfly fully open. It then started. The exact opposite to what should happen it seems. Perhaps if the weather was colder the butterfly would need to be shut.

I need to get a new spring.

Perhaps my carb is running 'super rich'

or you had "flooded" it and the extra air cleared it enough to fire up??   Accelerator to the floor is the way to clear a flooded carburettor engine ....  :)
Title: Re: Why won't my mower start?
Post by: Doctor Gollum on 22 December 2020, 22:32:29
You've flooded it then ::)
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 23 December 2020, 13:56:53
You've flooded it then ::)

Flooded it? :o

If the f*ucking thing started when I pulled the cord I wouldn't be able to flood it.
Title: Re: Why won't my mower start?
Post by: Doctor Gollum on 23 December 2020, 14:29:24
Well, there's that...

The wet plug would suggest the presence of motion lotion...

Pop the plug in a low oven for a spell and try again. Assuming you have spark of course ;)
Title: Re: Why won't my mower start?
Post by: Tick Tock on 24 December 2020, 17:51:06
Pop the plug in a low oven for a spell and try again. Assuming you have spark of course ;)

Wouldn't it be quicker in the microwave?  ;D
Title: Re: Why won't my mower start?
Post by: Sir Tigger KC on 24 December 2020, 18:55:47
Pop the plug in a low oven for a spell and try again. Assuming you have spark of course ;)

Wouldn't it be quicker in the microwave?  ;D

Yes a great way of testing for a spark!  :y
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 24 December 2020, 18:59:34
Pop the plug in a low oven for a spell and try again. Assuming you have spark of course ;)

Wouldn't it be quicker in the microwave?  ;D
Microwave is better for drying out a poodle or whippet rather than a spark plug.
Title: Re: Why won't my mower start?
Post by: YZ250 on 24 December 2020, 19:05:09
Pop the plug in a low oven for a spell and try again. Assuming you have spark of course ;)

Wouldn't it be quicker in the microwave?  ;D

Yes a great way of testing for a spark!  :y

It most certainly is.  :y  Years ago my son put a casserole dish in the microwave...... with foil over it.  ::)  We returned home to the smell of what I thought was an electrical fire. I threw the microwave out to get rid of the smell. He said it was the best firework display he'd seen for a while.  ;D
Title: Re: Why won't my mower start?
Post by: YZ250 on 24 December 2020, 19:18:59
You've flooded it then ::)

Flooded it? :o

If the f*ucking thing started when I pulled the cord I wouldn't be able to flood it.

Briggs mower engines are like visitors ....... they'll go eventually.  ;)

By contrast, I have an old Honda Izy in the garage. It hasn't been started for at least four years and the tank was bone dry. I very slowly pulled the cord a couple of times to make sure it was free and then put some fuel in it. On the very first pull it almost started but spluttered and died. On the second pull it started and ran like a good'un.  :y  That's how they should work.  :y
But that doesn't really help does it.   ;D
Title: Re: Why won't my mower start?
Post by: STEMO on 24 December 2020, 19:32:22
Pop the plug in a low oven for a spell and try again. Assuming you have spark of course ;)

Wouldn't it be quicker in the microwave?  ;D
Microwave is better for drying out a poodle or whippet rather than a spark plug.
What is this obsession with Yorkshire? Do you really hate Lincolnsausageshire so much? You make the most implausible jumps from any subject to matters Yorkshire, if you want to move here, I can't see any reason why you shouldn't.  :-*
Title: Re: Why won't my mower start?
Post by: Sir Tigger KC on 24 December 2020, 19:57:33
Pop the plug in a low oven for a spell and try again. Assuming you have spark of course ;)

Wouldn't it be quicker in the microwave?  ;D
Microwave is better for drying out a poodle or whippet rather than a spark plug.
What is this obsession with Yorkshire? Do you really hate Lincolnsausageshire so much? You make the most implausible jumps from any subject to matters Yorkshire, if you want to move here, I can't see any reason why you shouldn't.  :-*

You'd be great friends and neighbours and could bicker over the fence!  :y  ;D
Title: Re: Why won't my mower start?
Post by: STEMO on 24 December 2020, 20:00:46
Pop the plug in a low oven for a spell and try again. Assuming you have spark of course ;)

Wouldn't it be quicker in the microwave?  ;D
Microwave is better for drying out a poodle or whippet rather than a spark plug.
What is this obsession with Yorkshire? Do you really hate Lincolnsausageshire so much? You make the most implausible jumps from any subject to matters Yorkshire, if you want to move here, I can't see any reason why you shouldn't.  :-*

You'd be great friends and neighbours and could bicker over the fence!  :y  ;D
I'd move  ;D
Title: Re: Why won't my mower start?
Post by: Nick W on 24 December 2020, 20:08:14
Briggs mower engines are like visitors ....... they'll go eventually.  ;)

By contrast, I have an old Honda Izy in the garage. It hasn't been started for at least four years and the tank was bone dry. I very slowly pulled the cord a couple of times to make sure it was free and then put some fuel in it. On the very first pull it almost started but spluttered and died. On the second pull it started and ran like a good'un.  :y  That's how they should work.  :y
But that doesn't really help does it.   ;D


That's because it's a Honda. Which is Japanese for "does exactly what you bought it for."


On that note:


Toyota - not quite a Honda
Mitsubishi - I can't believe the parts are so expensive :o


Yamaha - neeeeeoooow, crash, bang, silence


etc
Title: Re: Why won't my mower start?
Post by: Sir Tigger KC on 24 December 2020, 20:08:32
Pop the plug in a low oven for a spell and try again. Assuming you have spark of course ;)

Wouldn't it be quicker in the microwave?  ;D
Microwave is better for drying out a poodle or whippet rather than a spark plug.
What is this obsession with Yorkshire? Do you really hate Lincolnsausageshire so much? You make the most implausible jumps from any subject to matters Yorkshire, if you want to move here, I can't see any reason why you shouldn't.  :-*

You'd be great friends and neighbours and could bicker over the fence!  :y  ;D
I'd move  ;D

It'd be a great laugh watching Lord Opti trying to start his mower!  ;D ;D ;D
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 25 December 2020, 16:19:46
Pop the plug in a low oven for a spell and try again. Assuming you have spark of course ;)

Wouldn't it be quicker in the microwave?  ;D
Microwave is better for drying out a poodle or whippet rather than a spark plug.
What is this obsession with Yorkshire? Do you really hate Lincolnsausageshire so much? You make the most implausible jumps from any subject to matters Yorkshire, if you want to move here, I can't see any reason why you shouldn't.  :-*

You'd be great friends and neighbours and could bicker over the fence!  :y  ;D
I'd move  ;D

He'd beg me to stay. I bring sunshine into his life. :)
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 25 December 2020, 16:23:04
You've flooded it then ::)

Flooded it? :o

If the f*ucking thing started when I pulled the cord I wouldn't be able to flood it.

Briggs mower engines are like visitors ....... they'll go eventually.  ;)

By contrast, I have an old Honda Izy in the garage. It hasn't been started for at least four years and the tank was bone dry. I very slowly pulled the cord a couple of times to make sure it was free and then put some fuel in it. On the very first pull it almost started but spluttered and died. On the second pull it started and ran like a good'un.  :y  That's how they should work.  :y
But that doesn't really help does it.   ;D

Once up and running it will usually restart every time on the first pull. Leave it alone for a couple of months and it becomes the mower from hell. :-[
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 25 December 2020, 17:00:42
Pop the plug in a low oven for a spell and try again. Assuming you have spark of course ;)

Wouldn't it be quicker in the microwave?  ;D
Microwave is better for drying out a poodle or whippet rather than a spark plug.
https://www.omegaowners.com/forum/Themes/core/images/bbc/underline.gif
What is this obsession with Yorkshire? Do you really hate Lincolnsausageshire so much? You make the most implausible jumps from any subject to matters Yorkshire, if you want to move here, I can't see any reason why you shouldn't.  :-*

Er....it was a jump from putting plugs in the microwave to putting a pooch in the microwave. Where does Yorkshire come into it? :)
Title: Re: Why won't my mower start?
Post by: Nick W on 25 December 2020, 18:54:08
Pop the plug in a low oven for a spell and try again. Assuming you have spark of course ;)

Wouldn't it be quicker in the microwave?  ;D
Microwave is better for drying out a poodle or whippet rather than a spark plug.
https://www.omegaowners.com/forum/Themes/core/images/bbc/underline.gif
What is this obsession with Yorkshire? Do you really hate Lincolnsausageshire so much? You make the most implausible jumps from any subject to matters Yorkshire, if you want to move here, I can't see any reason why you shouldn't.  :-*

Er....it was a jump from putting plugs in the microwave to putting a pooch in the microwave. Where does Yorkshire come into it? :)


Good question, they're too tight to buy microwaves in Yorkshire
Title: Re: Why won't my mower start?
Post by: STEMO on 25 December 2020, 19:04:36
Whippet, he mentioned whippet. He always mentions whippet. Whippet, whippet, whippet  ;D
Title: Re: Why won't my mower start?
Post by: Sir Tigger KC on 25 December 2020, 19:09:24
Whippet, he mentioned whippet. He always mentions whippet. Whippet, whippet, whippet  ;D

That's because he's a dirty old man!  ::)

He looks at a girls arse and thinks "Whippet, whippet, whippet!"   ;D
Title: Re: Why won't my mower start?
Post by: STEMO on 25 December 2020, 19:15:50
Whippet, he mentioned whippet. He always mentions whippet. Whippet, whippet, whippet  ;D

That's because he's a dirty old man!  ::)

He looks at a girls arse and thinks "Whippet, whippet, whippet!"   ;D
He would say he's a red blooded male. But, yes, he's a dirty old man  ;D
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 25 December 2020, 19:19:21
Whippet, he mentioned whippet. He always mentions whippet. Whippet, whippet, whippet  ;D

I also mentioned poodle which is not a Yorkshire born Yorkshire bred mutt.......like the whippet. :)
Title: Re: Why won't my mower start?
Post by: STEMO on 25 December 2020, 19:21:09
Whippet, he mentioned whippet. He always mentions whippet. Whippet, whippet, whippet  ;D

I also mentioned poodle which is not a Yorkshire born Yorkshire bred mutt.......like the whippet. :)
You said whippet, again.
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 25 December 2020, 19:23:14
Whippet, he mentioned whippet. He always mentions whippet. Whippet, whippet, whippet  ;D

That's because he's a dirty old man!  ::)

He looks at a girls arse and thinks "Whippet, whippet, whippet!" [/i]  ;D

You can always gently nip it with your teeth if you like variety, or cover it in warm chocolate and then.......

I'd better not say any more to an innocent 'Darzett' lad or you may become inflamed with lust. ;D

Title: Re: Why won't my mower start?
Post by: STEMO on 25 December 2020, 19:24:58
Here's my whippet

http://(https://i.ibb.co/b6GsjgD/7-B08-ECEC-D990-4-AD8-8719-3368-A90-DA754.jpg) (https://ibb.co/VLkg0W5)
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 25 December 2020, 19:28:34
Yep.....you own a lesser spotted white whippet.

Pretty rare. :)
Title: Re: Why won't my mower start?
Post by: dave the builder on 25 December 2020, 19:30:50
it's a bit fat and needs a shave
I guess it's just a result of the lockdowns  ;D
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 25 December 2020, 20:01:50
it's a bit fat and needs a shave
I guess it's just a result of the lockdowns  ;D

Yes I noticed it was a fat bastard for a white  whippet. I blame the owner.
Title: Re: Why won't my mower start?
Post by: dave the builder on 25 December 2020, 20:17:12
I don't think it's even a whippet  ???

I think poor gullible old Uncle Stemo has been tricked

not to worry , you can claim back if it's miss-sold PPI PUP
Title: Re: Why won't my mower start?
Post by: STEMO on 25 December 2020, 20:53:26
She's 10 next year is my walking buddy, I'll be a fat bastard when she goes  ;D
Title: Re: Why won't my mower start?
Post by: dave the builder on 25 December 2020, 20:58:46
looks like a lovely health dog  :)

probably outlive you  ;D   :-X 

happy Christmas  :D ;D
Title: Re: Why won't my mower start?
Post by: Sir Tigger KC on 25 December 2020, 21:54:48
Here's my whippet

http://(https://i.ibb.co/b6GsjgD/7-B08-ECEC-D990-4-AD8-8719-3368-A90-DA754.jpg) (https://ibb.co/VLkg0W5)

I have a friend who has that style of whippet.  They can be quite the character I think?  :)  :y
Title: Re: Why won't my mower start?
Post by: STEMO on 25 December 2020, 22:00:38
She bosses me about, if that's what you mean. She's the only dog I've had that I can't stare out, she's not a bit worried about what I think.
Title: Re: Why won't my mower start?
Post by: Sir Tigger KC on 25 December 2020, 23:48:37
She bosses me about, if that's what you mean. She's the only dog I've had that I can't stare out, she's not a bit worried about what I think.

Yes my friend also has a big black lab, but the whippet is the top dog!  ;D

What is it anyway?  Westie? Yorkie?   ??? :-\

Unlike Lord Opti, I have no experience or expertise with dogs.   ;D
Title: Re: Why won't my mower start?
Post by: TheBoy on 26 December 2020, 10:13:07
That's because it's a Honda. Which is Japanese for "does exactly what you bought it for."
Except electronics. Honda never were good with (reliable) electronics.
Title: Re: Why won't my mower start?
Post by: TheBoy on 26 December 2020, 10:15:50
Here's my whippet

http://(https://i.ibb.co/b6GsjgD/7-B08-ECEC-D990-4-AD8-8719-3368-A90-DA754.jpg) (https://ibb.co/VLkg0W5)
Arrhhhhhhhhh :)

Such a pretty little bitch half clad in Santa gear probably belongs in Skrunties thread :P


Has she filled herself on leftover xmas dinners yet?
Title: Re: Why won't my mower start?
Post by: Field Marshal Dr. Opti on 26 December 2020, 13:28:52
That whippet looks gay.

Looks like the canine member of The Village People.