Rebuilding 40hp Johnson Super Seahorse RDS-22. Need help

[zdowell]

Revised: I got her started yesterday. Was running great for about 3-5 min in a bucket of water. Went to throttle her up and it died... Come to find out after removing the flywheel again that the key way was sheered. Were going to replace the key way and see what happens. Not sure what caused it to sheer off but the engine pulls over still and has spark again. The prop has some decent size dents in her though. Im thinking maybe it hit something and sheered it? Are these engines set up to do something like that?

 

[lindy46]

Re: Rebuilding 40hp Johnson Super Seahorse RDS-22. Need help

The two black wires are the kill circuit. When the key is off, the circuit closes, grounding the points together to stop the engine. I think those "little guys" you're pointing to are the mercury switches. Quoting F_R, "One of them prevents starting the motor when the throttle is advanced too far. The other one prevents the vacuum cut-out switch from operating at other than slow throttle settings." That junction box really needs some cleaning. Clean up all the connectors with a wire brush so the start circuit works as it should.