Got a freebie Craftsman Tecumseh 5 hp 2-stroke single stage blower from someone who said it last ran several years ago. Has good compression and spark, but when I put fuel in there wasn't a pop of response when I tried starting it. Took the lower housing off to access the carb, pressed in the bowl drain and I got a trickle of rusty looking fluid, very thick...but no scent. Set the blower on the front so the carb was horizontal and took the bowl off, it had about a spoonful of what looked like thick rusty sludge...the pin that held the float bowl on was rusted to about the thickness of a paper clip. Need to replace the float (corroded) the pin, the float needle is long since gone so I need to replace that plus the seat. The stuff in the bowl and on the bottom of the carb looks like wet iron filings but there is no scent at all. I think it's water but not sure...guy I got it from said he always had it indoors and the fuel cap on. Any ideas? Thanks.