In the cylinder head attached, to the top of the cylinder.
The spark plug gap for this kind of ATV is .035.
it could be a bad spark plug wire or the plug could be gapped to much
.028
spark gap is 0.28mm.
Is asking
Would you use lawn mower plugs in your car?? NO!!!!
18MM
Spark plug may be bad or coil may have went bad.
What is the spark plug gap setting for a 1987 yamaha big bear
NO; it's there to stop stray sparks from burning down forests
.030-.040
0.8 to 0.9 mm