Honda GCV 135

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Sat 15 Apr 2006 17:10
Honda GCV 135 - cheddar
Hello,

I have a Honda lawn mower powered by a 4.5hp GCV135 motor, these were built I think from 1997 on though mine is a 1999 model. This engine and the longer stroke 5.5hp GCV160 are still current models and are unusual for being an OHC design with a wet cambelt, i.e running in oil within the engine. They are very quiet and are praised for efficiency and low emmisions.

I have a fairly comprehensive guide to the engine which tells me that the valve clearances need checking every 150 hours (reckon mine has done between 150 and 200 hours) though there is no mention as to what the clearances should be. Also I am not sure if the cambelt needs changing though I guess that the engine will be non interferance.

Any ideas?



Thanks.
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Sat 15 Apr 2006 20:03
Honda GCV 135 - JohnPug
Try here.

snipurl.com/p8nt
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Sat 15 Apr 2006 23:56
Honda GCV 135 - cheddar
Excellent, many thanks!
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Mon 22 Sep 2025 00:29
Honda GCV 135 - Peter Courtney

Inlet valve is 0.15mm

Exhaust valve is 0.20mm

see 1 min 37 seconds into youtube video by Martin ( has helped me a lot )

www.youtube.com/watch?v=NkrgGk9_mLo

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Mon 22 Sep 2025 05:37
Honda GCV 135 - edlithgow

Old thread of course, but RE "guessing" the engine is non-interference, NOT something you want to be guessing about, but I'd guess (OK for me to do it, since not my engine) its unlikely.

If they bothered to inflict wet belt awfullness on a lawnmower engine, seems unlikely they would miss that other autodestructive opportunity.

But perhaps that clipurl (now dead) source clarified the matter.

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If you cover no more than 100 miles per day and have easy access to a charging point at home or work, then an EV is ideal for you.

Is an electric car right for me?