.030
Spark Plug gap is .025
0.020 in or 0.50mm
Champion RDJ7Y is the correct number.
.030 Champion RJ19LM
.030
My 16" Craftsman 36 cc chainsaw manual calls out for a Champion RCJ7Y....if that is the same size chainsaw as yours, I would go with that plug.
Mine has original plug, it is a: Champion # CJ8Y
Spray some ether in the carb. If it fires, it has spark, but not getting fuel. start there.
.030"
.030"
Rj19l
Champion CJ8 spark plug is for the crsftsman 3.0 edger/trimmer