I just bought a used Honda BF-100 9.9 horsepower outboard that's about
12 years old. It runs fine and starts on the first pull but...

When i put the top cover onto the engine, it runs out of air and starts
to shut down. If I pull the lid up a little and let some air inside,
it will keep running. If I leave the lid on, it runs out of air and
stops within a minute.

I can only see one air opening in the top lid and that is where the
handle fitting comes in. I drilled out some extra holes next to the
existing holes in that handle area but the problem still happens.

Is there another source for fresh air to the motor besides the small
slit in the upper handle area?? I can't find a hose or anything to
indicate an air intake anywhere on the motor.

Any suggestions appreciated.

-jw