My Honda GX120 Engine in my mower is 'pulsing' it's revs all by itself with no input from me, both on idle and in drive, has anyone ideas what it could be? I've checked all the obvious things so has anyone got any other suggestions?
Lawn Mower Engine
- Thread starter PiKe
- Start date
They're all fine, mowers about 6 years old.
Soldato
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- 25 Mar 2003
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This is where we recommend a Mondeo right?
No, wait, i'm confused!
No, wait, i'm confused!
These engines usually have a "pneumatic" governor, basically a flap that is pushed by the airflow created by the cooling fan which is part of the flywheel. Any slight binding in the linkages, or stretched/broken springs can cause this hunting.
It can also be caused by fuelling problems e.g. a blocked jet in the carb, or flooding due to knackered needle valve etc.
It can also be caused by fuelling problems e.g. a blocked jet in the carb, or flooding due to knackered needle valve etc.
Caporegime
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- 11 Mar 2005
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Associate
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- 21 Jan 2004
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also check for an air leak between the carb and inlet.
make sure the rubber gasket is a: still there( could have perished after 6 years) and b: seated properly
bullit
make sure the rubber gasket is a: still there( could have perished after 6 years) and b: seated properly
bullit
Soldato
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- 26 Oct 2002
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- Norwich
My mower is doing the same, Honda engined but only 1 year old.
If i put the throttle in the highest setting (on the edge of the choke) its ok, any other setting and the revs pulse up and down and on lowest settings stall.
I assumed old fuel and have put up with it but will check the above - cheers
If i put the throttle in the highest setting (on the edge of the choke) its ok, any other setting and the revs pulse up and down and on lowest settings stall.
I assumed old fuel and have put up with it but will check the above - cheers