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How to adjust your Apex EX-UP/Power Valve..

Discussion in 'Engine & Clutching' started by MrSled, Mar 27, 2013.


  1. MrSled

    MrSled Administrator Staff Member Admin Moderator VIP Member

    Messages:
    18,695
    Location:
    Schofield, WI
    Country:
    USA
    Snowmobile:
    2020 Sidewinder SRX
    Last edited by a moderator: May 3, 2014
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  3. Viper_Dave

    Viper_Dave Moderator Staff Member Moderator Lifetime VIP Member VIP Member

    Messages:
    2,339
    Location:
    Clinton, Wi.
    Country:
    USA
    Snowmobile:
    '11 Apex XTX, '09 Venture GT, '06 Attak, 08 Nytro Hybrid
    I'll be checking this now! Thanks for the video MrSled.
     
  4. Redbeard

    Redbeard Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    1,728
    Location:
    IN
    Country:
    USA
    Snowmobile:
    2012 Apex, 136 M20, PB80
    2008 Vector, 136 M20, PB80
    2004 RX Warrior
    1995 Vmax 4 800
    1995 Vmax 600 LE
    1995 Ovation 340 LE
    Should a guy check this adjustment wether you've changed anything or not?
     
  5. yamaha1973

    yamaha1973 TY 4 Stroke Master

    Messages:
    1,288
    Location:
    St. Peter Minnesota
    Country:
    USA
    Snowmobile:
    2014 Viper XTX SE
    Mr. Sled, was yours out of adjustment? I thought I had read on here that you thought yours was a little slow compared to other Apexs?
     
  6. Grimm

    Grimm TY 4 Stroke God

    Messages:
    4,976
    Location:
    Ottawa, Ontario
    Country:
    Canada
    Snowmobile:
    2018 MXZ 850, (RIP) 2016 MXZ X 1200
    I wish you had posted this video yesterday. I just did mine and had to read the service manual over and over again to try and get a better understanding of how to set the EXUP.

    This should help those new to adjusting the EXUP valve, great job.
     
  7. Redbeard

    Redbeard Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    1,728
    Location:
    IN
    Country:
    USA
    Snowmobile:
    2012 Apex, 136 M20, PB80
    2008 Vector, 136 M20, PB80
    2004 RX Warrior
    1995 Vmax 4 800
    1995 Vmax 600 LE
    1995 Ovation 340 LE
    Are you guys saying this adjustment may not be correct from the factory, or it gets out of adjustment over time?
     
  8. MrSled

    MrSled Administrator Staff Member Admin Moderator VIP Member

    Messages:
    18,695
    Location:
    Schofield, WI
    Country:
    USA
    Snowmobile:
    2020 Sidewinder SRX
    Hi guys... yes it will get out of adjustment. Mine was out after 2500 miles, I noticed fuel mileage and top end loss.

    I would think you would want to adjust or check after every season or at least check after the first season.
     
  9. Viper_Dave

    Viper_Dave Moderator Staff Member Moderator Lifetime VIP Member VIP Member

    Messages:
    2,339
    Location:
    Clinton, Wi.
    Country:
    USA
    Snowmobile:
    '11 Apex XTX, '09 Venture GT, '06 Attak, 08 Nytro Hybrid
    Probably my issue as well Tom. Chasing a never ending curve with clutching. Mileage and top end were WAY down this yr.
     
  10. MrSled

    MrSled Administrator Staff Member Admin Moderator VIP Member

    Messages:
    18,695
    Location:
    Schofield, WI
    Country:
    USA
    Snowmobile:
    2020 Sidewinder SRX
    Dave, let me know how yours looks when you check it. Actually I am curious about everyone's results.
     
  11. Viper_Dave

    Viper_Dave Moderator Staff Member Moderator Lifetime VIP Member VIP Member

    Messages:
    2,339
    Location:
    Clinton, Wi.
    Country:
    USA
    Snowmobile:
    '11 Apex XTX, '09 Venture GT, '06 Attak, 08 Nytro Hybrid
    I'll be sure to post results. Heading for Florida Friday so it'll be a week before I get to it.
     
  12. Redbeard

    Redbeard Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    1,728
    Location:
    IN
    Country:
    USA
    Snowmobile:
    2012 Apex, 136 M20, PB80
    2008 Vector, 136 M20, PB80
    2004 RX Warrior
    1995 Vmax 4 800
    1995 Vmax 600 LE
    1995 Ovation 340 LE
    My sled's are put to bed, so it will be later this summer before I can get to it.
     
  13. maim

    maim Moderator Staff Member Moderator Lifetime VIP Member VIP Member

    Messages:
    5,295
    Location:
    sudbury on
    Country:
    Canada
    Snowmobile:
    2016 apex xtx/ 2011 apex xtx/ 2009 phaser rtx/x/ 1997 et410t/r
    I will add it to my preseason list. hope to get some riding in tomorrow.
     
  14. STAIN

    STAIN Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    2,365
    Location:
    Vermont
    Country:
    USA
    LOCATION:
    Vermont
    Do you believe that once you confirm the position of the EXUP valve the first time you can use just the diag screem to adjust your cables there after? If you need to see 0 and 180 on the diag screen I assume this is all you need to adjust the cable free play(?)
     
  15. Preacher

    Preacher Expert

    Messages:
    257
    Location:
    New Hartford,Ct.
    Thanks Tom , just another obvious reason why this is such a great site
     
  16. Millinocket Rocket

    Millinocket Rocket Pro

    Messages:
    152
    Location:
    Sebago Lake, Maine
    Thanks for the video Mr. Sled...I just did mine today and my notch was off to the right. Kept playing with the cable adjusters until it stayed centered on the hole when I cycled the key. All set now, sled has 2100 miles on it.
     

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