Dan wrote:

I have a 1964 35HP Mecury O/B that wont start. Two days ago it was
runnig fairly well. yesterday it was difficult to start and would not
run smooth or stafy running. After some investigation I found that
there was a spark only on one of the two cylinders. I remove the
flywheen, and cleand and filed the points. After reassembly there is a
good sprak on both. Now I can't start the enging anymore, there is fules
going into the cylindars, and it has good spark and good compression
(135lbs).

The flywheel has a center hub thingy, and the part with the magnets, we
took thos apart so we could get a good puller on to pop it lose. I
didn;t see any markings showing how it was supposed to line back up, so
I assumed it doesn't matter. Could this be the reason it won't start?
If so how can I get it aligned correctly again?

-Dan

Replace the points and condensers with Mercury parts (2 ea. of 398-2202
& 398-2203, respectively) as filing is a temporary fix in a marine
environment. In a pinch, use the Sierra 18-5008 tune-up kit which
contains all the parts.

You are describing a two-piece flywheel? This I'm not familiar with...
the magnets should never be seperated from the keyed hub... this is a
factory pressed assembly because with a magneto ignition the placement
of the magnets is critical for timing and balance. The flywheel is
pulled using a steering wheel type puller, never a jaws type, and the
flywheel is timed to the crankshaft by the shaft key.

I would try to get another flywheel (used, of course) at this point, and
use the proper puller. There is now no way now to reseat the magnets
with the proper timing, and the engine could be very dangerous now if
out of balance. The flywheel should be torqued to 75-80 ft. lbs.

Rob