Join Date: Aug 2008
Location: Cape May, NJ
Thanked 0 Times in 0 Posts
Rep Power: 0
Don, Here are some suggestions, Captphil24 is right on the money to start.
Get rid of the old fuel!!!, remove and replace any fuel filters you have in line from your tank to the engine.
Change oil and filter, If the engine has a secondary, fresh water cooling system, drain it and put in new coolant, I would pull the raw water hose and inspect whats inside, "critters, seaweed, mud," etc... if you are able, check the water pump impeller, it would not be a bad idea to just replace it.
Look at your air box, if the boats been sitting, bugs, rodents and other things may have made a home in it.
Look over all the electrical connections for corrosion and replace as needed, replace you altenator belt, It's not worth the headache having it brake underway.
Lastly, before you do all of these things I would go buy the Yanmar book, specific for your engine, sit down with a cold beer or the beverage of choice and start reading. It's the best way to learn, ""Vrs" trial and error, spoken from experience! Hope this helps... Good luck! thats a good motor,