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03-30-2004, 03:28 PM
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Member
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Join Date: Mar 2004
Posts: 3
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Tecumseh mower engine runs for 3 secs
The Engine is a Tecumseh TVS115(56600). The problem is that the engine will start when I prime it but will only run for about 3 seconds and then stop. Prime again, run 3 secs, stop. Etc.
It has fresh gas. I just checked the spark plug and gap, changed the oil and air filter. It was running well, although sometimes its RPMs would go in waves.
It has a float type carburetor. I removed the float bowl to make sure there wasn't "gunk" in there. Everything looks good.
Obviously it has something to do w/ the fuel intake after it gets to the float bowl so that's where I will start first.
I have a Technicians manual, so I'm not w/o hope but I'd rather have some input before ripping everything apart.
Thanks
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03-30-2004, 04:15 PM
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Member
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Join Date: Nov 1999
Posts: 269
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If no fuel was present when you removed the float bowl, check the fuel inlet needle/seat. It may be stuck closed or clogged. If that's not the problem, work your way back to the fuel tank. Check fuel line and the fuel tank pickup for obstructions.
If fuel was present in the float bowl, you probably have a blockage in the jets.
Last edited by DS : 03-30-2004 at 04:18 PM.
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03-30-2004, 04:28 PM
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Member
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Join Date: Mar 2004
Posts: 3
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Yes, fuel gets to the float bowl just fine so you're suggestion of the jets seems logical.
Where the heck are the jets. As mentioned, I have the Tecumseh Technician's Handbook. If you have the same book, please point out the page where I can get a better idea where these jets are located, but it's not clear, at this time, to me. If you don't, maybe you can provide me with some images online?
Thanks.
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03-31-2004, 11:37 AM
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Member
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Join Date: Feb 2004
Location: winnipeg
Posts: 97
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Justin
Check out the diagram on this site and it will probably clarify the problems you are having. http://www.lawn-mower-shop.com/carb1.htm
Most likely you have one of the small orifices plugged on your carb and that's what is causing the problem.
One thing you didn't mention is if you have an adjustable Hi Speed screw or is it fixed, reason being is if it is adjustable, then you should be able to turn the screw out maybe 1/4 of a turn counter clockwise (richen the mixture) and the mower should run now.
snoman |
04-05-2004, 06:05 PM
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Member
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Join Date: Mar 2004
Posts: 3
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Got it and thanks.
It was a clog in those little holes in Hi Speed screw. Blew it out and it now runs like a charm.
I just wanted to say thanks to you guys for your assistance.
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05-15-2006, 11:20 AM
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New Member
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Join Date: May 2006
Posts: 2
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Can you guys tell me more about the Hi speed screw hole? My TVS115 has two limit screws, and I had this mower running great last year. Then this year it started and ran great the first time, then hard to start after that, and then only run after using starter fluid; and now only runs for 3 sec using the starter fluid. Wierd. I have taken the carburetor apart many times looking for something obvious. What am I missing?Thanks.
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05-16-2006, 04:12 AM
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HobbyTalk Pro
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Join Date: Aug 2004
Location: NC
Posts: 3,240
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Taking the carb off and looking at it won't show you if its got a clog, I'd suggest you take the carb apart, and soak it in carb cleaner for a couple hours and blow it out (through any and all holes you see) good with compressed air, have a carb rebuild kit to replace the gaskets, needle and seat and such.
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