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Repair guides and support for riding, or ride-on, mowers, also known as lawn tractors, of all types used in tending large tracts of land.

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briggs and stratton 17 hp ohv valve specs

I'm looking for what the valve setting spec are on a 2003 Model 31C777, Type 0173E1 (17 Hp) motor.

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I have a 17.5 ohv briggsandstratton . Need to know the valve adjustment on it please. When I hit the key it turns over maybe one then it will not turn over anymore. Take the plug out and it turns over just fine.

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Michael, You really should have posted this as a question if you wanted a answer, as not too many ifixit volunteers would look at comments on old post. Not knowing the engine model#, I have posted a link below to tell you what the valve,s should be set at using your model#, and a video showing how to.

http://www.briggsandstratton.com/us/en/~...

https://www.youtube.com/watch?v=0cWoEk5G...

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Jeff, double check your numbers. I believe it should be 31C777-0173-E1 which makes your engine a MODEL 310000 VERTICAL SERIES

Valve Clearance – Intake .003 - .005 in. (.08 - .13 mm)

Valve Clearance – Exhaust .005 - .007 in. (.13 - .18 mm)

Hope this helps, good luck

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3 Comments:

I forgot a 7.

Thank You & have a Great Day.

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The bottom valve is intake people make that mistake

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Thanks I have the same engine,exact same problem, thanks guys.now that info is cataloged!

Donn

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Jeff will be eternally grateful.
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