Merc 340 Tune up
 

Hi guys,

A good friend is allowing us to use his boat over Labor day weekend. As a thank you, I am planning on doing an oil change and general tune up on the boat for him. It's long overdue.

The boat is a 1987 Wellcraft Portofino with 340 Merc inboards. I assume there is nothing inherently special about the inboards vs I/O's? I figure I'll do oil and filter, water pump impellers, cap, rotor, plugs, and fuel filters. Any thing else I should do while I'm in there?

-Artie

Plug wires depending when they were done last, check exhaust riser gasket area for any outside leakage, then they would need to be replaced and probably not a bad idea if they were never done. Check belts/tension, clean flame arestor's, change gear oil in fuel pump/sea water pump tank if it has that set up.