Generally the recommended plug gps for most (all??) of the 2 strokes were revised from 0.040" to 0.030" in the late 1980s (??)The online charts say to gap at 0.03 for my 120 HP, V4. Is that right? If I'm reading correctly that is 0.75mm, which is very tight. The plugs I pulled out were at 0.4 or 0.5. Please help!
Thanks
Generally the recommended plug gps for most (all??) of the 2 strokes were revised from 0.040" to 0.030" in the late 1980s (??)
I would have thought that your 1913 owners manual would have said .030"..Does it not ?
My 1984 owners manual says 0.040" but the latest recommendation is 0.030"
Gaps wear open pretty fast on these motors. I set mine new to 30 thou and they were worn to 40 by the end of season.
30 thou is mechanic's, engineer's and draftsman's shorthand for thirty one-thousandths of an inch. It equals 0.762mm.