yatabata
Cadet
- Joined
- Oct 18, 2015
- Messages
- 22
What is a good range for a 1957 mercury mark 10hp? Just checked it and both cylinders are at 85psi. I think that should be ok for an old pull start that hasn't been ran in years. This was dry except for trying to start it with the 50/1 mix. No spray in the cylinders yet to improve psi yet.
