WR250R Drivetrain

Discussion in 'Maintenance and Repair' started by jmil, Jan 9, 2017.

  1. jmil

    jmil When are we riding?

    Location:
    San Francisco
    Name:
    Jeremy
    Thanks Logan! I was actually able to remove it using a piece of pipe slide over a socket wrench as a breaker bar. Actually on the Yamaha it's lefty-loosey, though I can see how it would be better to design it the other way. So I got the new CS sprocket on, torqued it down while standing on the rear brake and leaning over the bike, adjusted the chain slack, and I'm ready to ride :ride
     
  2. jmil

    jmil When are we riding?

    Location:
    San Francisco
    Name:
    Jeremy
    What's the consensus in a new chain: clean the factory lube off and relube, or ride as is? 520 EK oring chain.
     
  3. Guoseph

    Guoseph Well-Known Member

    Location:
    Alameda CA
    Name:
    Alex
    I wanna ride too, wish it wasn't so wet
     
  4. EricB

    EricB Modulator

    Location:
    San Jose
    Name:
    Eric
    I don't think there is a consensus.
    (Perhaps a poll would be entertaining)
    Personally, 1st ride is with the grease. Clean it after that.
    Regarding the methods for loosening/tightening the c-shaft nut - I made a piece of aluminum to position between a sprocket tooth and a frame member below the output shaft.
    The sprocket cannot move, and it's not spongy as the rear brake method seems to be.
     
  5. Andy

    Andy Wheelie for Safety

    Location:
    Los Altos, CA
    Name:
    Andy
    I use gasoline and a rag to remove the grease before I go on the first ride.
     
    jmil likes this.
  6. KTMrc

    KTMrc Dino

    Location:
    San Jose
    Name:
    Randy
    Ride it first then clean it later, or never.
     
  7. KTMrc

    KTMrc Dino

    Location:
    San Jose
    Name:
    Randy
    I only use steel sprockets, hardly worn after 13k miles.
     
  8. jmil

    jmil When are we riding?

    Location:
    San Francisco
    Name:
    Jeremy
    My new sprockets are steel.

    Never clean the chain, huh?
     
  9. KTMrc

    KTMrc Dino

    Location:
    San Jose
    Name:
    Randy
    This may start another holy war!!

    It stays clean if you don't oil the outside of it.
    I use a DID 520VT2-120 x ring chain. I will see how long it lasts before the lubricant leaks out of the x rings.
    The first chain lasted 13629 miles and had 1/2 inch of chain stretch.

    I defer to the experts on chain maintenance...
    http://www.reginachain.it/eng/use_and_maintenance/how_to03.shtml
    http://www.didchain.com/maintVid.html
    http://www.sprocketsunlimited.com/Chainmaintenance.html
    http://www.belray.com/super-clean-chain-lube
    http://www.rcramer.com/shop/chain_lube.shtml
    Do not use WD40 on your O ring chain?
    Use WD40 on your chain?
     
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