way OT lawnmower engines.. :)
The electronic ignition was a great advancement and usually result in
a better spark which makes starting easier.
The other cause I have found , particularily with the te***seh engines
is that the key for the flywheel is designed to distort or break if
the blade hit a rock. the flywheel moves in relation to the rest of
the engine , and then is hard to start because the timing is off.
I picked up one of the craftsman OHC engines at the curb and after
pulling my arm off, discovered the thing had been put together with
two intake valves in the factory. I could tell the head had never been
off by the paint and abscence of any marks from dissassembly. The
intake valve is bigger so it wasn't even going into the seat at
all :), but by some miracle it got a bit of compression , enough to
run enough to leave the factory. My cheap farmer fix was to turn the
valve smaller on the lathe and seat it in with grinding compound. it
ran fine after that. Retired it for a honda a couple of years back
and I am pretty happy with it, easy to start. it drives itself, but
has issues with not releasing it's drive, so I have to pull it back
with the wheels turning forward. I guess it's good excercise :)
Phil
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