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The Sputtering 3.5-hp Tec Engine

17 years ago

The Sputtering 3.5-hp Tec Engine

I have a 3.5-hp TEC engine I cleaned the carb the best I could. The main jet only has one small hole on the side. The mower starts ok then sputters with black smoke coming out of the exhaust. I backed off the tension on the spring and the engine runs a bit better. I also cleaned 2 small holes at the throat of the carb that did not help. Looks like a very simple carb. What am I missing?

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Comments (4)

tomplum
17 years ago
It is running rich. That normally equals float /float valve trouble. Is it a metal bowl carb? #s would be helpful.
rolm
Original Author
17 years ago
Yes it is a metal float, I did check and it seems ok. i will get back to you with engine numbers. thanks
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baymee
17 years ago
Remove the air filter and see if it works OK.
rolm
Original Author
17 years ago
It's fixed eventhough the carb was filthy before I started. The sputtering was caused by the kill wire rubbing on the fly wheel. I can't belive it some of these mowers take 2 minutes to fix and some take 20 hours.

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