answersLogoWhite

0


Best Answer

About the same as a car, new oil, new spark plugs, new water pump, new spark plug wires, some stabil in the gas to keep it from going bad, maybe a new prop if its bad, that's about it without rebuilding the engine if its not broke then don't fix it. I'd also get a shop manual it tells you everything you need to do.

User Avatar

Wiki User

12y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How do you tune up a mercruiser 120?
Write your answer...
Submit
Still have questions?
magnify glass
imp