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.07
Would you use lawn mower plugs in your car?? NO!!!!
0.8 to 0.9 mm
According to the spark plug manufacturer NGK, the recommended gap for a 2001 Honda XR100 is .028"
0.039-0.043 in (1.00 - 1.10 mm)
0.028
Get a spark plug socket and unscrew the spark plug and replace with a new one.
.044
if you buy a new spark plug for your 2001 xr80r and it has a gap setting, set the setting all the way to the top of the plug as far as you can get it.
.020" to .025"
.044 is the spec, i suggest use KNG spark plug brand .044 is the spec, i suggest use KNG spark plug brand
if it starts i might need the carburetor tuned or cleaned or check the spark plug gap