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Hello I have a troy bilt 210 lawn mower and it hasn't ran in 3 years but I ran the gas out of it before I stored it and before I stored it it fell and the auto choke bracket came off and the spring got stretched,so I put it back on where I thought it went and now I'm trying to start it, I poured a little gas in the carb.and it would run until the gas was gone, any ideas on what to do ?

Check engine oil level & inspect air filter. Add fresh gas & give it a try, let us know how it goes, thanks, Mark