Yz 125 won’t shift

the_dirt_rider55
Hey all! My buddy has a 2000 yz125 that shifts but won’t engage. I’m not sure if it has to do with the shifting mechanism or the clutch. I can physically shift it through all the gears, and say if I shifted into 4th, I can roll the bike and it acts like it’s in neutral. Id like to get opinions from you all before I tear into it. Thanks!
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Layton
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Layton 9/5/2019 1:32pm
9/5/2019 1:32pm
Only one sure way to find out and that’s to take it apart.
Obviously start with the clutch since it’s only about a 15 minute job to take it out.
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Deja New
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Deja New 9/5/2019 2:46pm
9/5/2019 2:46pm
My sons RM85 did this ended up being only the selector fork Smile cheap and easy fix. Best of luck with the yz Smile
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08r1dilla
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08r1dilla 9/5/2019 4:05pm
9/5/2019 4:05pm
I know they updated the shift fork in 07. I was told to put this in my 06 so I wouldn't have problems
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SmokinJoe439 9/5/2019 4:07pm
9/5/2019 4:07pm
When's the last time you changed the clutch plates? Sure the clutch isn't slipping.
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SKIDLID
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SKIDLID 9/5/2019 4:17pm
9/5/2019 4:17pm Edited Date/Time 9/6/2019 2:15am
Clutch basket is broke I bet. I had two late 90’s yz crap out the baskets back then
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Max D
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Max D 9/5/2019 4:47pm
9/5/2019 4:47pm
Definitely clutch related. Easy fix. Replace all of the clutch parts while you’re in there. Will save you another tear down later on.
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Drop-Bear
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Drop-Bear 9/5/2019 10:54pm
9/5/2019 10:54pm
08r1dilla wrote:
I know they updated the shift fork in 07. I was told to put this in my 06 so I wouldn't have problems
They made the change in the 06 didn't they?
MX114
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MX114 9/6/2019 5:08am
9/6/2019 5:08am
08r1dilla wrote:
I know they updated the shift fork in 07. I was told to put this in my 06 so I wouldn't have problems
Drop-Bear wrote:
They made the change in the 06 didn't they?
I think it was 07. I went thru several on my 2006
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Drop-Bear
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Drop-Bear 9/6/2019 5:16am
9/6/2019 5:16am
08r1dilla wrote:
I know they updated the shift fork in 07. I was told to put this in my 06 so I wouldn't have problems
Drop-Bear wrote:
They made the change in the 06 didn't they?
MX114 wrote:
I think it was 07. I went thru several on my 2006
Good to know.I always thought they updated it on the 06.
Max D
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Max D 9/6/2019 11:27am
9/6/2019 11:27am Edited Date/Time 9/6/2019 11:29am
If it’s shifting through the gears it’s most likely not a shift fork. But your title says “YZ 125 won’t shift”..... you can shift through the gears without using the clutch. If it’s shifting, but not engaging properly, its probably clutch related. You have to take apart the clutch first anyways to split the cases and get to the tranny.

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