I have a Mountfield LS45 that was working fine until I hit a stone. The engine now runs too fast and the mower vibrates. Can anyone assist?
Matt Davis
September 2012
my briggs and sratton ls45 carburetor is not mixing fuel correctly mixture is too rich. have checked choke mechanism all ok. Cleaned carbs all ok. Engine using far too much fuel - black smoke coming from exhaust as though engine choking itsel. Please can anyone help.
Graham
August 2012
I have just had the same problem it turned out to be the choke had stuck,the carb is bolted on and 2 bolts are hard to see at first, be carefull when taking apart as there are 2 plastic seals that join to the body you will see the choke ,put a touch of wd 40 move it with your finger ,should then be ok
john pettard
May 2007
your engine is running too rich (too much petrol). find the main jet on the carb and adjust it (normally you turn it clockwise a little at a time but be carefull not too tight or it will break!!). adjust it so the engine will carburate smoothly from idle to full throttle.
but before trying this, make sure that the choke is not still on!!
Jammin James
November 2004
Get a good Hayter
Dave Dale
July 2004
Yep - that's about it. Then runs like it's gonna give up at any minute...
Barry
June 2004
like the first 5 seconds it runs good then it starts missing black smoke and runs real bad ?
Stewart L. Hockenberry Sr,
June 2004
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