R
rob shaw
Guest
"I have a Yamaha 40 Precision
"I have a Yamaha 40 Precision Blend outboard. I bought new NGK spark plugs and need the gap measurements. In trying to locate this information, I became frustrated even trying to figure out what year the engine might be. I've owned the boat & engine for about 5 years and vaguely remember the seller telling me it was a late 80's. The model is 40 ESRP, Code 6H4S."
"I have a Yamaha 40 Precision Blend outboard. I bought new NGK spark plugs and need the gap measurements. In trying to locate this information, I became frustrated even trying to figure out what year the engine might be. I've owned the boat & engine for about 5 years and vaguely remember the seller telling me it was a late 80's. The model is 40 ESRP, Code 6H4S."