Hi, Ran perfectly Sat. Sun morn no start, abig fart, enough smoke to make art...(oh why not...) then after no spark, then dark , then light monday, spark !, 1/2 can ether, no go ,no backfiring, mon arrive home, start 1st go....).. another backfire and stops, then fine ever since! Coil..? but usually cuts hot...? had water in bildge, poss wet flywheel now dried a bit..? Ok guys....?
Dont mean to a obvious but did you change the plugs. I used to run yamalube and it fouled plugs all the time and would give simialar symptoms as you have
