[Jonathan316]

I''ve an old ''85 Johnson Sailmaster 6 outboard which is giving me problems and wondered if someone could point me in the right direction.

After starting & warming up, the engine seems to idle fine and will throttle-up happily when not in gear. Once placed into gear it will run OK until you get past maybe 1/2 throttle - then it dies as if you pulled the choke out. If you throttle back fast enough you can keep it running at 1/2 speed.

Does this sound like a carb issue? What should my first troubleshooting steps be?

I also do not fully understand the ''Lean-Rich'' adjustment lever on the front of the motor. Am I correct that this is for messing with the mixture at idle -- not under power?

Thanks!