Need help with valve clearence 154FMI

Mshotta · 07-16-2024, 08:49 AM

Anyone know the valve clearence spec on the cheap 125cc atv horizontal engines please? 4t automatic with forward and reverse

Engine number 154fmi

Mudflap · 07-16-2024, 09:10 AM

I would set them at .003" intake and .004" exhaust.

Mshotta · 07-16-2024, 09:17 AM

Quote:

Originally Posted by Mudflap

I would set them at .003" intake and .004" exhaust.

Cheers buddy thank you

dirtbkr188 · 07-16-2024, 09:31 AM

+1 on Mudflap's recommendations...

Mshotta · 07-16-2024, 06:54 PM

Quote:

Originally Posted by Mudflap

I would set them at .003" intake and .004" exhaust.

I'm also looking for a head for that engine but can't seem to find the correct one online cos I don't no what make a model the engine is. All I can find is normal pit bike heads which are too big for these small 125 auto engines

Mudflap · 07-16-2024, 08:47 PM

By the engine number it should be a 54mm bore, shouldn't be hard to find. This is the first one that popped up on eBay.
https://www.ebay.com/itm/23466648887...mis&media=COPY

07-16-2024, 08:49 AM	#1
Mshotta Join Date: Feb 2024 Posts: 20	Need help with valve clearence 154FMI Anyone know the valve clearence spec on the cheap 125cc atv horizontal engines please? 4t automatic with forward and reverse Engine number 154fmi Attached Thumbnails
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07-16-2024, 09:10 AM	#2
Mudflap Join Date: Sep 2014 Posts: 1,933	I would set them at .003" intake and .004" exhaust.
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07-16-2024, 09:31 AM	#4
dirtbkr188 Join Date: Aug 2009 Posts: 577	+1 on Mudflap's recommendations...
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07-16-2024, 08:47 PM	#6
Mudflap Join Date: Sep 2014 Posts: 1,933	By the engine number it should be a 54mm bore, shouldn't be hard to find. This is the first one that popped up on eBay. https://www.ebay.com/itm/23466648887...mis&media=COPY
	0