Tecumseh Engine Revs Too High
#1
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Tecumseh Engine Revs Too High
I have a Craftsman lawnmower with Tecumseh engine/carb. One day I went to start it after it had gotten wet from rain and the carb gave a loud pop and a little white explosion came out of it and it would no longer run. Fuel just leaked out of the carb. So I disassembled the carb and found a hole in the float. I replaced it with a new one, plus a new seat for the needle, and cleaned it best I could. It now starts up and run steady, but rpm's are way too high. The linkage is all the same as before, and the governor arm moves freely. Did I maybe miss some debris in the carb during cleaning and engine isn't getting enough fuel so runs lean?
There's no throttle control on this mower, it's preset. When I manually throttle it down on the carb, it slows down but seems to run a bit erratic.
Thanks
There's no throttle control on this mower, it's preset. When I manually throttle it down on the carb, it slows down but seems to run a bit erratic.
Thanks
#2
Sure sounds like a linkage problem, maybe connected in the wrong hole or a spring binding. When you say it runs erratic, that makes me think it still needs some carb cleaning.
#4
If it's running too lean it could run a bit higher than normal, but generally it just surges when it's too lean. See the tab where the spring connects? Any way that could have gotten bent? That is where you set the rpm.