Q. My lawn mower seems to have excessive handlebar vibration that is interrupting my golf game, what could be the problem?
A. When diagnosing abnormal or excessive handlebar vibration, always check the obvious items first: a possible bent crankshaft, bent or out-of-balance blades, and/or excessive engine rpm. There’s something else you should also look for – grass in the crankshaft drive pulley. In rare cases, grass can build up and pack in the crankshaft drive pulley under the crankshaft drive belt, which will usually result in significant vibration. Inspect the pulley carefully, and if you see any grass, remove it using a flat head screwdriver. Then recheck for excessive handlebar vibration. I hope your golf game improved.
