EVINRUDE 1972 LARK50 - GEAR SLIP?

[TUBBYDUBBY]

I have a 1972 Evinrude Lark 50 that felt like it has a slipping clutch..I had power to go slow but just before my boat got up on a plane the motor rpm shot up and the boat slowed down. I regained partial power after I reduced the throttle. I checked the pin at the prop and it has not been sheared. Does anyone know what my outboard motor problem is?

 

[OBJ]

Re: EVINRUDE 1972 LARK50 - GEAR SLIP?

Hey Tubby, welcome to the forum...<br /><br />What you have is a classic case of the "spun hub". The rubber bushing in side the prop has lost it's grip, so to speak, and will spin at a certain torque. Motor rpms go up but you get no speed. Make a mark from the inner hub to the outter prop shell. Put the rig in the water and after the engine does what she does, take a look at the hub. If the mark is misaligned, the hub is spun.

 

[TUBBYDUBBY]

Re: EVINRUDE 1972 LARK50 - GEAR SLIP?

Thanks a ton. I will check it out!