The spark plug gap for a 2003 Mercury 125hp outboard motor is .040"
spark plug gap for a 1996 mercury 30 hp outboard motor?
What is the spark plug gap for a 9.9hp mercury outboard motor
100 hp searay
3 spark plugs
.025 Champian J4J (cold) to J8J (plugs) Points .018 - .02
.040
NGK bpr7hs-10
The spark plugs on a 1988 model, 70hp Johnson outboard, should be gapped to .030in.
Ngk bpz8h-n-10
The recommended spark plug for the 1977 model, 7.5 hp Mercury outboard is a Champion L78V, or NGK BUHW-2. Both brands are Perma Gap type plugs, with the Champion being the manufacturer supplied plug back in 1977.
My 2004 Suzuki DF70 uses NGK BPR6ES plugs.