Newish motor, run-in and flown ~6 times over the summer (I don't fly very often). Bought from Just Engines. Mounted in my 4*40 turning a 12x6 APC prop. Runs fine but does not want to stop! Even placing my finger over the carb intake does not stop it - need to pull the fuel line.

Thinking it might be an air leak from around the carb. seat, I removed the carb. and replaced with a bead of silicone around the base/seat area. No difference.

I've seen some posts where people refer to the front bearing seal. Not being an expert with engines, how do I confirm this as a possibility? And then how do I go about replacing this seal?

I guess I'm learning the drawback of ordering from Just Engines. I suppose they'd take care of it if I mailed the engine back to them, but the hassle involved in multiple international mailings is giving me pause.

Thanks for any help,

Ram
(newbie around here)