The spark plug gap for a 25hp Tohatsu outboard is typically set at 0.030 inches (0.76 mm). It's essential to check the owner's manual for your specific model, as slight variations may exist. Proper gap settings ensure optimal engine performance and efficiency. Always use the recommended spark plug type for best results.
I use the QL77JC4 Champion plugs with a 0.030in gap.
0,6 -0,7 mm
The spark plug gap for a 2003 Mercury 125hp outboard motor is .040"
The correct spark plug gap for the 1982 model, 9.8 hp Mercury outboard is .040 in.
spark plug gap for a 1996 mercury 30 hp outboard motor?
What is the correct spark plug gap setting for a Mercury outboard 2003 200 HP EFI
A Mercury outboard will run well with a plug gap of .035 - .040 in.
NGK BPR6HS-10 spark plug. Gap is .040
What is the spark plug gap for a 9.9hp mercury outboard motor
Johnson 6hp spark plug gap
The required spark plug for a 50 hp outboard engine would depend on the make, and year model of the engine.
The 1998 model, Yamaha 250 hp outboard, requires an NGK BR9HS-10 spark plug, gapped to .039 in.