Champion J6J is the recommended plug which has been changed to J6C by Champion.
The recommended plug gap for the 2000 model, 4 hp Johnson is .030 in.
The proper spark plug for 4hp Briggs & Stratton is a J8 which I use in all my motors.
what spark plug do i need for a 3.75
Mine is a 2000 model and it has an NGK R BPR7HS10
Johnson 4hp outboard bj4brcud
The original spark plug fitted was a Champion 8 com but these are very scarce these days ,Champion D16 is an equivlent or NGK make an 18mm plug that is also suitable
The 4WF69B model, 4hp Johnson, would be a 1969 year model.
The spark plug gap for a 4HP Tecumseh snow blower typically ranges from 0.030 to 0.035 inches. It's important to check your specific model's manual for the exact specifications, as there can be slight variations. Proper gap settings ensure optimal engine performance and efficient ignition. Always use a feeler gauge to confirm the gap is set correctly.
Jew
Far easier to drain old oil through filler tube, remember to always keep cylinder head [spark plug end] pointing up when tipping mower.
b 08800420
1969