I think it is 0.030".
spark plug is good but when its plug in to coil on spark
Champion CJ8 spark plug is for the crsftsman 3.0 edger/trimmer
.025" spark plug gap http://store.chainsawr.com/
.025
0.65mm
Champion DJ7Y (gap of 0.025")
Champion DJ7Y. Not sure of the plug gap though.
0.020"
anywhere between 16 and 18 on a spark plug gauge should work fine.
Plug gap should be .025" http://store.chainsawr.com/
Mine is 3/4
Rdz19h