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Rick, Factory Authorized Trainer
Category: Small Engine
Satisfied Customers: 8063
Experience:  Outdoor Power Equipment technical trainer since 1990, covering eight states.
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I have a honda gx390 13 horsepower engine. I need to know

Resolved Question:

I have a honda gx390 13 horsepower engine. I need to know the valve setting. Thank you
Submitted: 7 years ago.
Category: Small Engine
Expert:  Rick replied 7 years ago.



Your valve settings are:


Intake -- 0.15 +/- .002 mm (0.006" +/- 0.001")


Exhaust -- .020 +/- 0.02 mm (0.008" +/- 0.001")


Here's a manual excerpt that may be useful to you as well:


Hope this is helpful!

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