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I posted a problem with my 2000 Rm 125 earlier this summer. The problem is when my bike is totally at a stop in first gear with the clutch pulled in, i am having a problem taking off. On a regular bike you can slowly ease the clutch out to get going. Only way i can get it go to is to basically rev it up and dump the clutch.
Bike runs and shifts fine once its moving. Never pops out of gear or anything.
When i do this, i feel the bike catch a little bit then nothing over and over again. Its not so much a smooth engagement, but rather a real "mechanical" miss as if the chain is skipping off the sprocket then engaging again.
Some suggested i check the clutches and fluid level. This past weekend i pulled the bike completely apart. Clutches and plates were checked. All calipered to well within spec of my manual. The basket looks new almost no grooves. Hub and all teeth are fine.
Dealer suggested checking shift drum and shift fork for wear and maybe a bent fork or something. So we split the cases and drum looks new, all forks were calipered and checked out to spec called out in the manaul. None of the gears were damaged or even worn for that matter.
Everything in that motor looked brand new. No metal anywhere, ring is stock and well within gap. Theres barely any carbon anywhere.
I am pretty much stumped. any ideas before i put everything back together? im pretty sure ive looked at just about everything.