Discussion Starter · #1 ·
Hi all, I have a Craftsman, number 917.254245, and the engine on it is a 12hp OHV Tecumseh, 120358X. That number is what Sears said, and after googling it, nothing useful came up. Here's the problem I'm having with this mower. It will crank, run, fast and slow, however, when throttled down to a near idle, it hiccups through the carb and blows a mist of gasoline. I have removed the carb and cleaned it thoroughly, new plug, oil change, taken off the head and relapped the valves, put it all back together again, and still the same problem, although it does run a little better now. Someone said it may be the crank/flywheel key bent, but i dunno. It runs mostly fine at a higher rpm, just at lower rpm's it gives me a little fit. Any ideas would be greatly appreciated. THanks!