I use the QL77JC4 Champion plugs with a 0.030in gap.
The Gap is .030
Evinrude Model 10755a E = 1977 9.9HP Electric Start Outboard Motor
The oil / fuel ratio for the 1977 model, 85 hp Evinrude outboard, is 50:1, roughly one pint of 2 cycle oil, to six gallons of fuel.
The 1977 model, 70 hp Evinrude outboard requires an NGK BZ7HS-10, or a Champion QL77JC4 Plug gapped to .030 in.
To change the coil on a 1977 6 hp Evinrude outboard motor, first disconnect the spark plug wire and remove the engine cover for access. Unscrew the coil mounting screws and disconnect the wire connections from the ignition system. Replace the old coil with the new one, reconnect the wires, and secure it in place with the screws. Finally, reattach the engine cover and reconnect the spark plug wire before testing the motor.
it is a 1977 motor
Model number 35702H, would be a 1977 year model Evinrude outboard.
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.
The 1977 model, 140 hp Evinrude outboard, requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
The 1977 model, 200hp Evinrude outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
Well, jackass, the 2 h.p. weighs a few pounds more than the 140 h.p., so I'd say between 65 and 350 lbs.
50to1