I have a stanley lawnmower made by murray with the OHV175 engine in it and sense it was new it has run pretty rich, backfires when u shut it off unless u let it idle for a minute before u shut it off, and also it lopes pretty bad when its cold, its not lope but can't think of the term for it. speed goes up and down. after it warms it don't do it anymore. any ideas on what to do to fix this? It only has 1 adjustment screw and its the idle set. If it would have just started this it might not be a problem but its been doing it sense new. thanks for ur time.

Dwayne, August 2008

Make sure the throttle and governor linkage is clean & free of debris, clean air filter, good spark plug - mine did the same until I moved the governor spring up one hole - doesn't act as bad now. If yours has the peerless hydro I would worry more about that sorry piece of s**t than I would the engine !! Good luck !

CT, February 2009