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Chinese 125 cc valve adjustment

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Adjusting the Valves on a 2017 Kymco Kpipe 125
This is the second adjustment. milage is 2013.
valve adjustment service manual print out can be found at the end of the video for convenience.
Service manual calls for .08mm clearance on both the intake and exhaust on this engine.
It will be the same method of adjustment for most size chinese dirtbike and quads. individual clearance will vary depending on the specific engine. please research your own engine type to get the correct clearances. let me know if you have any questions.

Опубликовано:

23 окт 2021

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Комментарии : 30

@Retsillac Год назад

Thank you for this video! The other demonstrations of this (doing a valve adjustment) I saw did not mention the camshaft alignment marks. So I tried adjusting the valves just based on the flywheel and ended up with serious valve tick. After I saw this I made sure the flywheel and the cam were aligned and now my engine purrs like a kitten. 👍

@doobyboy21 Год назад

thankx for this video ! got my kids ATV to start ! The intake valve had gotten to tight and I couldn't start the thing anymore...

@everybodysjonathan Год назад

Glad it was helpful 👌

@llw53one 2 года назад

I just got the Vader 125 the first day it would turn over. The second day we got it to start and rode it for an hour everything was fine no issues, the 3rd day it didn’t turn over right away but after the 3rd try it started I rode it for maybe 1 minute and it just shut off. I called the place I purchased it from and they sent me a new carburetor, I replaced the carburetor and it won’t turn over. No issues with the started as it cranks up but does not turn over. Any suggestions?

@everybodysjonathan 2 года назад

So I know the carburetors on these run lean from the factory. Make sure the choke is on while starting. An easy way to asses the situation when it’s not starting is to look at the spark plug. If it’s wet, there is most likely a spark issue. If the spark plug looks dry there is no fuel getting to the engine which points to a carburetor issue. Hope that helps 👌

@smileybruv Год назад

Vapor lock. Rip out the air box and charcoal canister.

@bunasir394 4 месяца назад

Hi I m confused that my camshaft timming pulley and the other pulley there is (T)both are not Match is that normal or something wrong

@volkov6460 Год назад

How you doing sir, i have a chinese 125cc engine , it kicks over and ive put a brand new piston in it, however there is little to NO compression (20psi) , could this be due to the valves? ive adjusted timing so it maches up etc , the cylinder has no scratches or scoring. Would adjusting the valves bring compression back? thanks!

@xxs1lentk1ller30 22 дня назад

Yes, make sure timing is right too

@d.devries4807 2 года назад

everybody tells to not overtighten the nuts on the tappetadjuster. dont they Come loose due to the vibrations of the engine?

@everybodysjonathan 2 года назад

From what I’ve read it’s somewhere between 10 - 15nm which is about 10 ft lbs torque spec.

@mohaglade4892 2 года назад

Do I need to adjust my valve . I bought new Chinese bike but the bike rpm is low and feel less powerfull . 125cc that doesn't reach 100 kmph .

@everybodysjonathan 2 года назад

If it’s a new bike, I’d contact the dealer. They should offer some trouble shooting assistance. To be honest 100 kmh is faster than most of these 125 cc bikes are rated for. The Honda Grom / MSX 125 is rated at 95 kmh top speed.

@mohaglade4892 2 года назад

@@everybodysjonathan this has the vertical CG engine. also the engine is shaking like hell from 3500 rpm

@everybodysjonathan 2 года назад

I’d check valves on any Chinese bike new or used before putting any real time on the seat. Mine were out of spec (tight intake and exhaust) when first checked at 400 miles/ 650 km. Likely out of spec from the factory. That being said it still ran with similar performance. I’m not sure if this will be your problems fix though.

@mohaglade4892 2 года назад

@@everybodysjonathan @Everybody’s Jonathan thanks for replying , could be carburator could be valves could be plug bad coil or battery. Ive seen these many solutions but since its still in waranty Ill let the dealer handle It.

@dat_all_cool5303 2 года назад

@moah glade, I've had 4 Chinese pit bikes and my dad's friends have had around 2 or 3 each and they all say the same thing about them, 9 out of 10 times the carb they come with is trash from the get go, a new carb will improve top speed and throttle response but of course make sure your valves are adjusted aswell or the carb won't make any difference in that regard