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Symptoms of a worn out primary clutch ?

Discussion in 'Engine & Clutching' started by Mark Bow, Jan 12, 2019.


  1. Mark Bow

    Mark Bow Newbie

    Messages:
    12
    Location:
    Ontario
    Country:
    Canada
    Snowmobile:
    2009 Yamaha RS Vector GT ,1994 Yamaha V Max 600
    First ride of the season and my 09 Vector with 13,000 km will only go 75 km/hr. The engine runs fine,starts fine just has no grunt or top end. The throttle is 1/3 open pressing it anymore just does nothing .Does this sound like a clutch problem ? Thanks.
     
  2.  
  3. Mileage Quest

    Mileage Quest Expert

    Messages:
    366
    Location:
    MPLS, MinneSNOWda
    Country:
    USA
    Snowmobile:
    '12 Apex X-TX
    How old is you belt??? Mine loses significant power when my belt is worn
     
  4. Mark Bow

    Mark Bow Newbie

    Messages:
    12
    Location:
    Ontario
    Country:
    Canada
    Snowmobile:
    2009 Yamaha RS Vector GT ,1994 Yamaha V Max 600
    Just about 1500 kms on it .
     
  5. steiner

    steiner Moderator Staff Member Moderator Lifetime VIP Member VIP Member

    Messages:
    3,193
    Location:
    Niverville MB Canada
    Have you cleaned the carbs??
     
  6. Mark Bow

    Mark Bow Newbie

    Messages:
    12
    Location:
    Ontario
    Country:
    Canada
    Snowmobile:
    2009 Yamaha RS Vector GT ,1994 Yamaha V Max 600
    The carbs were cleaned over the summer. No adjustment were made other than setting the pilot jets back to spec . Two turns out. I was wondering if that was correct . The service manual says two turns out.
     
  7. baggs66

    baggs66 VIP Member VIP Member

    Messages:
    315
    Location:
    chautuaqua co. n.y.
    Country:
    USA
    Snowmobile:
    06 apex gt
    Maybe a broken or bad spring in the clutches.
     
  8. Mark Bow

    Mark Bow Newbie

    Messages:
    12
    Location:
    Ontario
    Country:
    Canada
    Snowmobile:
    2009 Yamaha RS Vector GT ,1994 Yamaha V Max 600
    I put it on a stand and the clutches seem to work fine but that's not under load. Cleaned and lubed the clutches with silicone lube and let it dry. Still the same when I test drove it . Hmmm ??
     
  9. baggs66

    baggs66 VIP Member VIP Member

    Messages:
    315
    Location:
    chautuaqua co. n.y.
    Country:
    USA
    Snowmobile:
    06 apex gt
    You don't want silicone anywhere near your clutches, if sprayed on it would get on clutch faces from overspray and then would have belt slip, need to clean clutch faces then scotchbrite them and try new belt, if you put it on rollers or face of weights they need to be cleaned also so they grip and roll not slide.
     
  10. maim

    maim Moderator Staff Member Moderator Lifetime VIP Member VIP Member

    Messages:
    4,835
    Location:
    sudbury on
    Country:
    Canada
    Snowmobile:
    2016 apex xtx/ 2011 apex xtx/ 2009 phaser rtx/x/ 1997 et410t/r
    throw some new springs in the clutches and get all that lube out of there. odds are that will fix your problem. clutches are supposed to be dry and usually get cleaned with brake cleaner and blown out with compressed air.
     
  11. Mark Bow

    Mark Bow Newbie

    Messages:
    12
    Location:
    Ontario
    Country:
    Canada
    Snowmobile:
    2009 Yamaha RS Vector GT ,1994 Yamaha V Max 600
    Problem solved it was the carbs , needed adjustments. Thanks for the advice.
     
    maim likes this.

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