Need help with clutch on Yamaha Yz 125

BigDogF250 wrote:
I've always wanted a chance to use this one...
Adjust Clutch

In all seriousness, it's pretty simple. There is an adjustment at the lever that looks like a wheel. Pull back any rubber so you can see the cable and turn the wheel so that the end of the plastic cable liner moves AWAY from the handle. This will tighten or increase the pull of the cable from one end to the other. If you find the clutch slipping when you hit the gas with the lever all the way out you went too far.

How did you do that??? ok thanks for the info

I've always wanted a chance to use this one...
Adjust Clutch

In all seriousness, it's pretty simple. There is an adjustment at the lever that looks like a wheel. Pull back any rubber so you can see the cable and turn the wheel so that the end of the plastic cable liner moves AWAY from the handle. This will tighten or increase the pull of the cable from one end to the other. If you find the clutch slipping when you hit the gas with the lever all the way out you went too far.

I do not know how to adjust the clutch cable. The basket feels smooth on the edges. I really appreciate the help because everying I am doing here im getting help from the forums or you tube. So since I ordered the clutch repair kit I will put it in and then I will look at he clutch cable.

If you could give me some help and how to do that I will be golden.
Thanks again for the help.

BigDogF250 wrote:
I've got to ask, do you know how to adjust the clutch lever/cable and did you start there? Failure to engage is a clutch / plate problem. Failure to disengage is usually a cable/adjustment problem (cables stretch over time and need adjustment) unless there is damage to the basket preventing the movement of the plates or debris in the pack.

Download or buy a service manual, most of the items are pretty easy to work on. If you don't have a torque wrench buy one, almost every bolt on a bike needs to be tightened to spec, usually to make sure you don't over do it and rip out the threads.

Good Luck!

Good advice on the service manual. You're working on just about the simplest OHV ever made. Topend rebuilds cost about $200.00 and take one hour. There is nothing on that bike that is "extra". Have spark, compression, fuel they run period.

I've got to ask, do you know how to adjust the clutch lever/cable and did you start there? Failure to engage is a clutch / plate problem. Failure to disengage is usually a cable/adjustment problem (cables stretch over time and need adjustment) unless there is damage to the basket preventing the movement of the plates or debris in the pack.

Download or buy a service manual, most of the items are pretty easy to work on. If you don't have a torque wrench buy one, almost every bolt on a bike needs to be tightened to spec, usually to make sure you don't over do it and rip out the threads.

Good Luck!

code3run wrote:
So just soak the fiber plates? The clutch basket seems fine with no grooves. It does have a bit of play to it meaning I can turn it back and fourth about 1/2 inch or so, is that normal?

So when the new clutch kit comes I will soak the fiber plates, renistall it all back together. How tight do I tighten the screws? Is that it pretty much?

My main issue was holding in the clutch the bike would still be in gear and want to lurch foward causing it to stall everytime I came to a stop in gear. Hoping this might fix that.

Thanks

If it's "grabbing" or not disengaging then the plates are not worn out. I would be more inclined to think it is either a worn clutch basket (like mentioned check for grooving where the plate tabs contact the basket) or warped plates.

Worn plates will cause the clutch to slip, not what you are describing. Did you check the cable slack? There should be about 1/8" max. gap between the lever and perch at the handlebars.

So just soak the fiber plates? The clutch basket seems fine with no grooves. It does have a bit of play to it meaning I can turn it back and fourth about 1/2 inch or so, is that normal?

So when the new clutch kit comes I will soak the fiber plates, renistall it all back together. How tight do I tighten the screws? Is that it pretty much?

My main issue was holding in the clutch the bike would still be in gear and want to lurch foward causing it to stall everytime I came to a stop in gear. Hoping this might fix that.

Thanks

Yes soak the fiber plates in oil, look at the condition of the metal plates and check for warping, if they look good it wouldn't hurt to put some sand paper on a flat surface and run the plates over the sand paper a few times on each side to remove any glaze they might have. also look at the clutch basket, make sure there are no grooves worn into the sides, that can make the fiber plates kind of hold up or not engage all the way/smoothly, if grooved you could try sanding but it would be beset to get a new one, aftermarket.

code3run wrote:
First of all I know nothing about clutch rebuilds other than what I am reading on the internet. I ordered new clutch plates and springs for my bike and have no idea if thats going to fix my problem but we will see.. Is there any secret to putting the new ones in? I heard to soak the plates in the oil overnight prior to installing? Any other advice would be helpfull.

Thank you

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