What is the average spark plug gap space for a lawn mower?
Answers:
I've answered similar questions before and know that the average gap is between .028 (most japanese models) and .032 (american models). If you gap your plug at .030, you should be fine.
Other answers:
.035
.035
.030
The correct gap is of course .30, for most Lhead (side valve, flathead) engines.... this goes for some OHV engines..... they may be .20 to .30