Valve lash gap


Old 05-11-02, 06:47 PM
Thread Starter
Join Date: Oct 2001
Location: USA
Posts: 83
Question Valve lash gap

Where can I find the valve lash gap for a Tecumseh Model LEV100? (3.75 Hp mower)

Why is this data so hard to find? I would think that there would be a web site with technical data for all Tecumseh and B&S engines. Is there such a place?

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Old 05-11-02, 10:27 PM
cheese's Avatar
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Join Date: Jul 2001
Location: USA
Posts: 16,814
Hi slowillie!

I don't have the specs for that engine either, maybe someone else here does. I would set them at .010 inch, both valves. That is what the older engines that your engine is based on were set at. Judging by the model # and the fact that my books don't show it, I am assuming it is a newer engine. My Techumseh books aren't really up to date, lol.
Old 05-12-02, 03:56 PM
Thread Starter
Join Date: Oct 2001
Location: USA
Posts: 83
It is not real new, I bought it in 1998.

It did not last long, however, before it started running poorly. I should have been working on it 2 years ago, but did not want too rush into it!!!!

The exhaust valve is quite a bit less than 0.010. I was thinking that that might be the problem.

Thanks again,
Old 05-13-02, 06:30 PM
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Join Date: Jun 2001
Posts: 1,448
Valve lash specs.

The adjustment is .008 cold. The stem can be trimmed to specs. Try a compresion test cold then hot. Just to be sure it's valve related.

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