Question about 2003 Yamaha YZ 125

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Yz 125 2001 stays in gear when clutch pulled in

I have a yz 125 2001 model when i pull the clutch in there is tention in the cable as i can feel it pulling the pressure plate away from the clutch plates , but my bike still seems to stay in gear. ive had the friction plates out andt they all soon to be in good condition .the bit where the metal rings attatch to moves freely when the clutch frictionplates are not in. it all happened from nowhere i was out one night then when i went out the next day the priblem was there. anyhelp would be reaaly helpful.thank you. Ryan Dundas

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  • RYANDUNDAS1 Apr 17, 2009

    just recently changed oil bout a week or 2 before
    10w30 honda transmition oil okay?
    thank you for your help

  • RYANDUNDAS1 Apr 21, 2009

    what is the difference between transmition oil and motor oil?

  • RYANDUNDAS1 Apr 21, 2009

    my bike is still the same would u advise me to just buy now friction plates?
    will it onli be the friction plates swollen? and is this definatly the problem?
    whanks for any help
    ryan Dundas

  • tombones May 11, 2010

    First, how long since your last oil change? Dirty, gritty oil will often create the problem out of nowhere.

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Lose the Honda transmission oil. It may have swollen the cork on the friction plates. Go with 10w40 in the gearbox. Any major brand; Mobil, Shell, Quaker State, Pennzoil, etc.. Try the new oil and give the cork a week to shrink back down > if they will. You may need to put in a new set of plates.

Posted on Apr 17, 2009

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Use a 10w40 low detergent oil. it won't the detergents in the oil will disovle the cork in the clutch discs

Posted on Dec 13, 2011

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SOURCE: yz 125 2001 stays in gear with clutch pulled in

hi m8,,this might sound stupid,, but in winter dayz and salty conditions ,cables corrode in side,,so i can start some where to help,, 1st take the cable off the handle bar,, and the clutch casin,,get a little bit of oil in a jam jar or any thing like that,,dip one end of the cable in the oil ,and keep pullin and pushing the inner cable as if u were trying to draw oil up threw the inside of the cable ,, turn cable the other end and repeat,, try that 1st m8,, still have probs come bk, and il go threw the next step,,

Posted on Apr 19, 2009

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I just replaced my clutch cable, but now that I've put everything back together I have a problem. The bike will from neutral to first and back without the clutch lever pulled in. However it also...


Good news, you just need adjust the clutch cable..

Always order the part for your model and year when getting parts and make sure it matches in length with the old one. Note how much cable is sticking out of the housing.
Is it 3 1/2 inches or 4 inches or 2 inches. make sure the new one matches.

Put the new cable on with lots of slack.Slack at the adjuster, and slack at the handlebar adjuster
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Now start your bike up and it should work like new.
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This ensures the clutches are definately disengaged by the time you get the lever pulled back to the grip when shifting.

If your clutches are slipping or dragging no matter how you adjust the cable then your clutches may need replaced.
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Nov 18, 2010 | 2003 Yamaha YZ 125

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When i pull my clutch lever in, it doesnt engage the clutch


First thing is to make sure you don't have motor oil in the engine. Wet clutches and motor oil are not compatible. Use only the oil sold at motor cycle shops. Do that before tearing into the engine or making any radical adjustments. Good Luck -Ned-

Sep 21, 2009 | 2003 Yamaha YZ 250

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Yz 125 2001 stays in gear with clutch pulled in


hi m8,,this might sound stupid,, but in winter dayz and salty conditions ,cables corrode in side,,so i can start some where to help,, 1st take the cable off the handle bar,, and the clutch casin,,get a little bit of oil in a jam jar or any thing like that,,dip one end of the cable in the oil ,and keep pullin and pushing the inner cable as if u were trying to draw oil up threw the inside of the cable ,, turn cable the other end and repeat,, try that 1st m8,, still have probs come bk, and il go threw the next step,,

Apr 19, 2009 | 2003 Yamaha YZ 125

2 Answers

Bike stays in gear with clutch in


You are saying that with the clutch lever pulled in the bike still wants to go forward. Generally that is caused by dirty, gritty oil in the gearbox. Go ahead and change the oil. 10w40 motor oil is what you want. I think that will fix the problem assuming the clutch plates were installed properly. The first plate installed and the last plate installed should be a fiber friction plate, 8 plates total. A metal pressure plate goes between each fiber plate, 7 plates total.

Be sure the lever assembly arm is installed so that it gets full movement of the clutch cable. If the full range of movement is not present then full disengagement of the clutch is not going to happen.

cape cod bob did you a good service in the manual referral. Be sure to say thanks.

Apr 16, 2009 | 2003 Yamaha YZ 125

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'95 Yamaha YZ 125 clutch - stays in gear when clutch is pulled in


the plates will stick to each other because of oil
check the clutch lever at the motor and make sure it is moving the arm that pushes the pressure plate and make sure it is moving

Apr 15, 2009 | 2003 Yamaha YZ 125

1 Answer

Clutch pulling


Your clutch is not fully disengaging.Adjust the cable at the lever until you have plenty of free play.Then adjust the cable at the motor until you have full engagement then readjust lever to 3/8 in play.Fine tune at the motor.It may take a few trys but you can get it.

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hey dude,, just thought id come in and give u some tips or 3,, i take it when u pull clutch lever in, and try and change gear it feels like your foot will snap b4 it goes in gear,, if that makes sense,, firstly mate,is to make sure the clutch cable slides freely ,easest way is to take cable off and just grab 1 end and make sure it isnt sticky,, if so dip one end of the cable in a bit of old oil ,,whilst holdin the other end ,pull and push the cable inner, this will **** up a bit of lubricant inside the cable ,, keep doin this each end till free to move, ,,next step if the cables ok,,, and may need help if u dont no,drain the oil out,,and as u r sat on the bike is to remove the clutch casing on the right hand side of the moter,where the bottom end of the cable goes,remove the casing being carefull not damage the gasket,,then u will see clutch plates and friction plates housed,, undo the 7 or 8 spring loaded bolts carefully take the first fibre plate out then metal friction plate then another fibre plate and so on,, wen u take the 1st plate out place that on the bench ,stacking each plate on top of one another, cause they have to go back in as they came out,,wen out,,u need a piece of wet n dry paper ,or fine emery,,and just wipe round both sides of the fibre plates taking the shine off them,as u put them back in,, put casing back on with a decent gasket,, oil back in cable on, make sure cable has no free play on the lever so wen u r about to pull lever in it bite straight away,, start her up, warm it up and try it,,any probs still il eat my shoe,, take care m8

Jan 10, 2009 | 2003 Yamaha YZ 125

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