Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

OK. I'm so stumped on this I've scratched myself bald. I have a Bolens snowthrower with a 10hp tecumseh. This fall I took it out and turned on the fuel valve and it leaked profusely. Upon removing the bowl I found what I expected, a float filled with gas.It had a small and detecable hole in it. Fine, I replaced the float, needle and seat. Yes the seat is in correctly,( ringed end up into the carbs inlet shaft). The open end of the retaining spring is facing the inlet side of the carb.The float is set with a 11/64 drill. No gummed debris in this shaft. Everything is spotless. No housing cracks. But when I install the carb back onto the engine it continues to leak, A lot. I removed the carb and turned it upside down and blew into the fuel inlet. It sealed the air fine. reinstalled and it leaked. I did this several times even taking it apart to reinspect it. Next I injected water into the bowl and it stopped the flow as it should have. Even with ample pressure it would not leak. Cleaned and dried the carb and reinstalled it. I continues to leak gas. I Dumped the bowl of gas, reinstalled it, and without removing the card I injected water as it sat undisturbed on the engine. It wouldn't leak. No mater how much I tried. Great, I removed the water and let the gas flow again. Yup ! it leaked. I'm done. That's it.Six hours later and no more hair. Now I wait until I can get this thing exorcised or someone has an answer. I've rebuilt many engines and carbs but this ones got me.
Hope someone can help. Before the next big storm! Thanks. Raymond

ITS WORKING !!!!

    No leaks as of yet. Used it Friday morning with no more leaking. I believe the solution was loosening of the retaining spring that holds the needle to the float lever. This ( again I believe) alowed the needle to better center its self when moving up into the seat. If this is not the case then I'm at a loss to any other reason. But its working so I'll leave it at that !

Thanks for all those that did come back with helpful comments.

Raymond

hirschallan wrote:

From a Tecumseh manual:

Someone once posted the link to this manual here but I can't find it. It's a pdf, send me your email address and I'll send it to you (unless someone else can repost that link, please).

" KEEP UP THE GOOD WORK"

This  forum is just full of great people and info.Always get the answers you look for.I'll check by a few times a day just to see how to help someone or how someone is being guided to a soloution.

Bill,

Thanks ! I figured it was something as you described but never seen it anywhere.

Allan

What an awesome thread.