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What is the correct spark plug gap setting for a Mercury outboard 2003 200 HP EFI
spark plug gap for a 1996 mercury 30 hp outboard motor?
A 65 hp Mercury outboard, serial number 2604414, would be a 1969 year model.
What is the spark plug gap for a 9.9hp mercury outboard motor
.030 gap
size and gap of plugs
A 65 hp Mercury outboard, serial number 3076063, would be a 1971 year model.
.035
Gap at .040 (fourty thousandths)
The plug gap for a 1995 model, 40 hp Mercury is .035 in.
50 - 1
There are none. I believe they use a perma gap plug.