I went to the local shop. My Gilson/Wards has Gator plugs in it. Never heard of them and I don't know the crossover. I just started to have starting issues. The best we could come up with is B&S 394539 which crosses to Champion RJ19LM. They said the NGK CS1 will work. I picked them up, what is the gap supposed to be? I forgot to ask them. Should they be resistor plugs?
Spark plugs for B&S I/C 16HP 402407 (Gilson/Wards tractor)
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