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Lawnmower gets hot and quits Sherman 07-15-2005
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Posted by JWitherspoon on July 15, 2005, 11:40 am



> add more coolant to the radiator.
>
> wrote:
>
> > My 4 year old lawnmower gets hot and dies. I can mow for 15 minutes
> >and it coughs and sputters and then shuts down completely and will not
> >restart - for 15 minutes. Then it will start and runs another 10
> >minutes.
> >
> > Seems to be a heat related issue. I cleaned out the debris and
> >replaced the spark plug. No change.
> >
> > What could be wrong and how do I determine it?


I like Rick's gas cap vent possibility. Maybe it's not getting too hot, but
building up a vacuum in the gas tank. It shuts down and then takes a few
minutes to slowly equalize the pressure before it'll start again. What the
hell, take the gas cap off and see what happens.




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Posted by Rick on July 15, 2005, 12:48 pm



> My 4 year old lawnmower gets hot and dies. I can mow for 15
minutes
> and it coughs and sputters and then shuts down completely and will
not
> restart - for 15 minutes. Then it will start and runs another 10
> minutes.
>
> Seems to be a heat related issue. I cleaned out the debris and
> replaced the spark plug. No change.
>
> What could be wrong and how do I determine it?
>
> Sherman
>

Lots of things...

But check for spark next time it happens-if not, you need a new
magneto coil. That's about $40

If it has a primer bulb, see if it's collapsed-could have a plugged
pickup tube screen in the gas tank. You drop the tank to clean that




Posted by Rick on July 15, 2005, 12:53 pm



>
> > My 4 year old lawnmower gets hot and dies. I can mow for 15
> minutes
> > and it coughs and sputters and then shuts down completely and will
> not
> > restart - for 15 minutes. Then it will start and runs another 10
> > minutes.
> >
> > Seems to be a heat related issue. I cleaned out the debris and
> > replaced the spark plug. No change.
> >
> > What could be wrong and how do I determine it?
> >
> > Sherman
> >
>
> Lots of things...
>
> But check for spark next time it happens-if not, you need a new
> magneto coil. That's about $40
>
> If it has a primer bulb, see if it's collapsed-could have a plugged
> pickup tube screen in the gas tank. You drop the tank to clean that

Oh yeah-check the vent on the gas cap, too. Do the simple things
first...
>
>




Posted by Sherman on July 20, 2005, 7:16 pm



>
>>
>> > My 4 year old lawnmower gets hot and dies. I can mow for 15
>> minutes
>> > and it coughs and sputters and then shuts down completely and will
>> not
>> > restart - for 15 minutes. Then it will start and runs another 10
>> > minutes.
>> >
>> > Seems to be a heat related issue. I cleaned out the debris and
>> > replaced the spark plug. No change.
>> >
>> > What could be wrong and how do I determine it?
>> >
>> > Sherman
>> >
>>
>> Lots of things...
>>
>> But check for spark next time it happens-if not, you need a new
>> magneto coil. That's about $40
>>
>> If it has a primer bulb, see if it's collapsed-could have a plugged
>> pickup tube screen in the gas tank. You drop the tank to clean that
>
>Oh yeah-check the vent on the gas cap, too. Do the simple things
>first...

Rick says "Check the vent on the gas cap, too".

Well, Bingo! Rick wins.

After checking for spark after it died, and getting a positive
response from my wife on spark, I replaced the spark plug cap and
reached up untwisted the gas cap off a 1/4 turn and it started on the
first pull.

Now, I looked and I don't see any hole in the gas cap for it to vent.
I hate that she has to mow with the gas cap not tight. She might
catch the mower on fire. I'd hate to lose that old mower.

Do I just drill a small hole in the cap?

Sherman.




Posted by Duane Bozarth on July 20, 2005, 2:36 pm


Sherman wrote:
>
....
> >> > My 4 year old lawnmower gets hot and dies. ...
> Rick says "Check the vent on the gas cap, too".
>
> Well, Bingo! Rick wins.
>
> After checking for spark after it died, and getting a positive
> response from my wife on spark, I replaced the spark plug cap and
> reached up untwisted the gas cap off a 1/4 turn and it started on the
> first pull.
>
> Now, I looked and I don't see any hole in the gas cap for it to vent.
> I hate that she has to mow with the gas cap not tight. She might
> catch the mower on fire. I'd hate to lose that old mower.
>
> Do I just drill a small hole in the cap?

It's a four-year old mower and <now> a non-vented gas tank is the
problem? Don't think so... :)

Mayhaps the vent is plugged, but I'm still not convinced...there's got
to be an existing vent if that is the problem or it wouldn't ever have
run reliably...


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