McCulloch 18" chainsaw, model MS1839AVCC, actually manufactured by MTD. Ran great for 18 months, died one afternoon and wouldn't start again. Tested for spark by holding the plug against the engine and cranking, and got no spark. Tested by holding it with my fingers and cranking, and got no jolt. Replaced the spark plug, properly gapped. Replaced fuel with fresh gas, replaced fuel filter, air filter sponge. Won't start. Fuel is flowing. Plug is wet. No spark, so it won't start. Replaced the ignition assembly with exact same part direct from MTD (Part # MC-9288-310501). No spark, no jolt. Is there something else to try? Is the gap between rotor and ignition assembly some high number (I put the new one in with a gap of .010")? I removed the kill switch wire to see if that was causing this, and it makes no difference either way. I should be getting a spark at this point. What else? Thanks, Antifa

Model 12F702-0606-01 Code 9408095 Has been in storage for years. Fired it up and lots of smoke came out of the muffler. It ran for a short while then died. Looked below the muffler and there was a small pool of dark oil. Checked the oil and it looks very clean. After several tries got the unit to fire up again. Same thing happened, lots of white smoke, oil dripping out of muffler, after several minutes I just shut it down. Someone suggested that the lawnmower may have been tipped. Not sure of that, I did not tip it. What can I do to try and clear out oil if it had been tipped? If tipping was not the cause of this problem, what else could it be? What can I do to troubleshoot or resolve this problem? Help, please!!!