The correct plug gap for the 1971 model, 6hp Johnson outboard, is .030-.035 in. It requires a Champion J6J, or NGK B6S.
its a 1971
For a 1971 Johnson 25 hp outboard motor, the recommended spark plug is the Champion J6C or an equivalent, such as the NGK B6HS. Ensure that the spark plug gap is set to the correct specification, typically around 0.030 inches. Always refer to the owner's manual for specific recommendations and maintenance practices.
The 1971 model, 50 hp Johnson outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
The 1971 model, 60 hp Johnson outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
.030
You have a 1971 Us Made motor.
Its a 1971
1971
.035"
An 80 hp Mercury outboard, serial number 3055133, would be a 1971 year model.
The 1971 model, 18 hp Evinrude outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
The Mercury 50 Thunderbolt, which is a model of outboard motor, was first introduced in the late 1950s. Specifically, the 9250049 model number corresponds to a motor from the early 1970s, likely around 1971. Therefore, as of 2023, the age of this particular outboard motor would be approximately 52 years.