cmeadows02
Cadet
- Joined
- Mar 15, 2009
- Messages
- 12
i have a 1983 mercruiser 4 cylinder 140 hp i just bought this boat the guy i got it from had a new head put on it. told me i would need to adjust the valves rocker arms what ever i took the cover off and they are all pretty loose took the motor to TDC on piston 1 and most of them are loose the only thing i cant figure out witch one is the intake or the exhaust i have looked every where online can't seem to find a diagram of this. can some one out there help me Thanks also there was a serial number on valve cover it is 3989793.. then i found one more above the starter it was 4157250 don't know if that will help just thought i would put them up incase ...