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Garden Tractors Discussion Forum

Tecumseh hard to start

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Cat Shipper

12-17-2012 07:59:52

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Have a small coleman generator with a 10 hp tecumseh. Can not get started using normal technique but if you spray a shot of starting fluid in intake it will start on one pull and runs great. Why is this?

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01-13-2013 17:35:01

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 Re: Tecumseh hard to start in reply to Cat Shipper, 12-17-2012 07:59:52  
I have a 10 hp tecumseh in a massey garden tractor and you can crank it till the cows come home unless the throttle is a t idle, it wont start. Put the throttle at idle speed and it usually starts in one or two revolutions. Just something to try. Mine is consistent that way. Throttle at idle and a little bit of choke, away it goes.

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Phil B.

12-19-2012 09:28:35

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 Re: Tecumseh hard to start in reply to Cat Shipper, 12-17-2012 07:59:52  
Dirty carburetor. The low speed jet is probably clogged due to generators usually sit for long periods of time unused. They run at a fixed 3600 RPM so the starting fluid spins the engine up to speed and the fuel is taken through the main jet, and seemingly runs fine. If you tried to idle this engine, you'd find it probably won't run at low speed which is why you can't start it normally. BTW, starting fluid is very hard on engine internals and could nuke the connecting rod.

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12-18-2012 14:33:53

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 Re: Tecumseh hard to start in reply to Cat Shipper, 12-17-2012 07:59:52  
I have a Coleman generator with a Tecumseh engine. It was hard to start plus I had to have the choke half on to keep the thing running.

I pulled the carburetor off and reamed the jets using a oxy/act tip cleaner. Just a small amount. It now starts on the first pull and I don"t need to use the choke anymore.

It did this from the first day I bought the silly thing.

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El Toro

12-17-2012 10:07:38

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 Re: Tecumseh hard to start in reply to Cat Shipper, 12-17-2012 07:59:52  
You should install a primer. That would spray that atomized fuel directly into the air stream.
MY snow blower has that feature and years ago when the military still used gas engines in their Tanks they had primers. Hal

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Larry Kosin

12-17-2012 08:48:10

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 Re: Tecumseh hard to start in reply to Cat Shipper, 12-17-2012 07:59:52  
Is this a new engine or more than 3 - 4 years old?

My experience with Tecumseh engines is they are great for the first 3 years or so then they become very troublesome to start.

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