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A Lawnmower Isn't A Vehicle But...

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lacmag3 | 21:31 Sun 24th May 2015 | Other Vehicles
6 Answers
You motoring guys might know the answer to this one. My Mountfield lawnmower continually revs high/low/high/low. Eventually it will settle down but as soon as it get some heavier work to do it starts high/low again. I have changed the carburettor but to no avail.
Any idea what the problem might be?
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Avatar Image shoota
Blocked fuel filter poss?
21:33 Sun 24th May 2015
Avatar Image mastercraft
Head gasket gone.
22:32 Sun 24th May 2015
Avatar Image Hopkirk
Has it got a choke lever?
22:36 Sun 24th May 2015
-- answer removed --
Avatar Image retrocop
I had a Briggs and Stratton engined lawnmower which did the same.
I agree with methyl. That happened to be the cause in my case.
22:41 Sun 24th May 2015
Avatar Image Khandro
Could be water in the fuel, has it been standing all winter? Easy check; drain the fuel completely and refill.
22:54 Sun 24th May 2015

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