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TO 35 burning to rich

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todd S Texas

07-12-2001 14:54:05




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My TO-35 has recently been overhauled, and everything runs fine. However, the exhaust is very rich. I feel that my gas/air ratio is incorrect. I have adjusted the carbuerto without any success. Does anyone have any suggestions.????




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Ray,IN

07-12-2001 19:36:13




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 Re: TO 35 burning to rich in reply to todd S Texas, 07-12-2001 14:54:05  
The H.Feguson tractors are designed to run rich to assist in cooling the valves when operating under heavy load. If you were to adjust the carb. to run best when no load is applied, the valves would burn when you worked the engine hard for extended periods such as plowing 5 acres. The power adjusting screw should never be less than one full turn open, rough adjustment is 1 1/4 turns open. You will benefit from purchasing a owners manual at a MF dealer. These are great little tractors, have fun!

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jbrunson

07-14-2001 14:02:10




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 Re: Re: TO 35 burning to rich in reply to Ray,IN, 07-12-2001 19:36:13  
what????? burn an intake valve??? explain (you have my attention now)



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Ray,IN

07-15-2001 15:43:39




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 Re: Re: Re: TO 35 burning to rich in reply to jbrunson, 07-14-2001 14:02:10  
The black smoke that emits from the exhaust pipe is unburned gasoline, this is true of any gas engine. When adjusted to run rich, black smoke=unburned fuel is present in the exhaust.It's the exhaust valves that burn due to a lean fuel mixture, and the leaner the mixture the hotter the engine operates. It's not how the engine runs at idle that's important, but under load. That's my feeble attempt to explain the H.Ferguson statement.

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