Briggs Stratton 5 HP Quantum XM

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bramerd@gmail.com - 13 May 2007 22:21 GMT

My mower will not keep running. It runs fine with starting fuel
sprayed into carb.
I have removed / replaced with new fuel.
Removed carb and cleaned all ports with torch tip cleaning rods & carb
clean to insure jets are not plugged.
Everything is clean.
Orderd a carb kit
Any ideas?

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cuhulin@webtv.net - 13 May 2007 22:57 GMT

Wal Mart stores sell new lawn mowers that have Briggs & Stratton engines
for not much over $100.00.Did you clean the spak plug,or put a new spark
plug in there? Fuel screen could be plugged up.
cuhulin

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clifto - 13 May 2007 23:51 GMT

> My mower will not keep running. It runs fine with starting fuel
> sprayed into carb.
[quoted text clipped - 4 lines]
> Orderd a carb kit
> Any ideas?

Manual or automatic transmission?

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Hal - 14 May 2007 00:31 GMT

On May 13, 2:21 pm, bram...@gmail.com wrote:

> My mower will not keep running. It runs fine with starting fuel
> sprayed into carb.
[quoted text clipped - 4 lines]
> Orderd a carb kit
> Any ideas?

Generally speaking the briggs engines with the 'diaphragm pump' (read:
fuel tank BELOW the carburetor) will have an issue if the pump-gasket
falls apart or the screws holding the carburetor to the tank start to
back off. If you are lucky you might get it to stay running by
tightening down the screws. If not, you'll probably need to change the
gaskets. Be careful when taking it apart, the governor/throttle arm
springs and the springs under the pump-gasket must be installed in the
same location as before or you may never get it running again.

In the future, you may want to consider a tecumseh engine. A real
float carburetor is better than a 'pump gasket' carburetor in my
opinion.

Chris

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Steve - 14 May 2007 15:34 GMT

> On May 13, 2:21 pm, bram...@gmail.com wrote:
>
[quoted text clipped - 21 lines]
>
> Chris

Nevermind that 5-horsepower Quantum engines already HAVE float
carburetors.... :-)

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Hal - 15 May 2007 01:01 GMT

> Nevermind that 5-horsepower Quantum engines already HAVE float
> carburetors.... :-)

Oops. My bad ;)

In that case assuming fuel is reaching the carburetor you either have
a problem with the float valve(is there fuel in the bowl? If not find
out why...) or a plugged up jet/passage.

Chris

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