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Stihl MS460 refuses to start. . .

#1

M

MrWobbly

Gentlemen: Saturday afternoon, my MS460 refused to start although it was running okay last week when I shut it down. After many crankings, I tried some ether. When that did not fire, I put a screwdriver into the spark plug boot and pulled the rope vigorously, several times, with no detected electrical charge. From what you all have written, my coil must be bad. Or, is there something else to look at? I checked the wiring and the throttle/choke switch and it is clean and operates crisply. I have not checked the flywheel or key yet because the chainsaw was working fine when I shut it off after the last use. The coil and wiring looks clean and strong and there is no smell of burning. Also, it seems queer that after all of that cranking and choking the plug was never wet. If the fuel hose was cut, would not the fuel leak, especially as the tank is full up? What do you think?


#2

M

MrWobbly

Gentlemen: Saturday afternoon, my MS460 refused to start although it was running okay last week when I shut it down. After many crankings, I tried some ether. When that did not fire, I put a screwdriver into the spark plug boot and pulled the rope vigorously, several times, with no detected electrical charge. From what you all have written, my coil must be bad. Or, is there something else to look at? I checked the wiring and the throttle/choke switch and it is clean and operates crisply. I have not checked the flywheel or key yet because the chainsaw was working fine when I shut it off after the last use. The coil and wiring looks clean and strong and there is no smell of burning. Also, it seems queer that after all of that cranking and choking the plug was never wet. If the fuel hose was cut, would not the fuel leak, especially as the tank is full up? What do you think?

Okay, here is the skinny: Although I never removed the flywheel, I did have the coil checked out and reset the gap to 0.010, I cleaned the gunk out of the kill switch, cleaned the plug, blew carb cleaner into the cylinder, and I never did find an apparent defect. However, after reassembling the chainsaw, it did start after a few pulls and I was able to do a day's work without a problem, on 24" trees. Go figure!


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