Thanks. I was just about to ask the same question, only for a 4-stroke Tecumseh.
I have given old engines a good spray inside with water dispersent in the past, which is basically hydrocarbon. I guess "Start ya bastard" is a similar product. Then I've cycled the engine a few times by hand prior to starting. Probably someone will tell me this is "bad practice", but I've never had any problems. A mate of mine uses a small amount of oil and gets everything lubricated prior to starting. Then sets it to idle until the oil has dispersed. Of course you get a fair bit of smoke after starting. He swears by it, but personally I don't like all the smoke and wonder if it is actually doing more harm than good. Probably is, because it just blackens the plug to start with!! Norm's advice sounds the most wise to me.
