1972 Johnson 25 horse. Model 25RL72R

[fishigan]

I need to get some info on this motor and parts. I hd a guy work on it and he got it running. However he disengaged the mechanism that keeps it from starting in gear or at full throttle. I have to turn it to full for it to start. It starts every time though. Also need to find out where to get a new head, starter solenoid and prop. The starter solenoid is bad and he wired a jumper to it. The top spark plug has at some point been stripped out so there is a sleeve on it.
Idles rough too.
I will greatly appreciate any help given.

 

[Monte1961]

Re: 1972 Johnson 25 horse. Model 25RL72R

at the beginning of this forum, look in the top secret files. Theres lots of good info in there. Good luck and welcome to iboats.

 

[samo_ott]

Re: 1972 Johnson 25 horse. Model 25RL72R

Hmmm, sounds like you got some problems. Parts can be found for it. The starter is a common one. If you have to turn it to full to start it, chances are the carb low speed circuit is not working so the carb should be cleaned. A prop can be picked up at any OMC dealer. Or your old one can be rebuilt maybe. For the head, I would just put a better insert in it. The 25hp heads are not that common as they were only made in that configuration for a few years. There are 18 and 20hp heads that will fit on it though but they wont have as much power.