Hi all, this is my first post. We have the motor listed above in the title, and it has sat for about 25 years. Prior to that it worked great for our family for a long time. We recently rebuilt our old plywood boat that my grandfather built, and would like to get the old motor running well. It ran "ok" at WOT after we took it out of storage, but didn't idle or run at low RPM very well. Now it doesn't start at all. I took the carb off and it is spotless clean. There seems to be spark, but I'm going to replace the ignition components. What else should be done to this motor? We did replace the gear lube and the old lube looked good.
I have taken the head off because the threads for the lower spark plug were ruined. I was able to get a new head at a low price, so that was a nice find. I will be replacing all the gaskets in that area.
I also noticed there is no thermostat. Not sure why it was removed. Anyone know if that was a common thing to do, or why there might not be one?
What else should I be fixing on this old motor?
I have taken the head off because the threads for the lower spark plug were ruined. I was able to get a new head at a low price, so that was a nice find. I will be replacing all the gaskets in that area.
I also noticed there is no thermostat. Not sure why it was removed. Anyone know if that was a common thing to do, or why there might not be one?
What else should I be fixing on this old motor?