buy a can of "quick start" -aka ether - and it will start first pull virtually every time> I drill a 1/8" hole in the air filter housing- and use the "straw" nozzle from a can of WD40 to give it just a whiff of ether before pulling the rope on hard starting equipment. You can do it with aerosol WD40 too - it works but not quite as well ( I think they use butane or propane as propellent)