Quote:
Originally Posted by Fuzz
Ya, if it is not the air filter it's most likely a gummed up carb. Not super hard to clean up if you are OK with disassembly. The issue these days is they put ethanol in our gas, and that tends to gel up after months of sitting. The solution is to always use a stabilizer before storage and run it for a little bit to let it run through, and try not to leave any fuel in it. The other one is buy Shell premium. As far as I know it is one of the only ones without ethanol. Since I switched to that I haven't had a problem in my mower, other than the clogged air filter which showed similar symptoms. The difference was with the air filter it would run for a few seconds, where the gummed carb was about a second.
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Yeah an easy start and then immediately dies, is a clogged idle jet. The jet that draws fuel and primes for starting is a larger diameter, so it get an initial shot of fuel and starts, but the idle jet is plugged so it won't stay running. Carb cleaner to the rescue!
As noted be sure to buy a premium fuel with no ethanol, small engine repair shops must love ethanol fuel. Gums up all of the inner workings of the carb, when left for any period of time.