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  1. Vintage Ski Doo's
    I have an '81 Everest 503 with a single Mikuni carb that won't stay idling, it dies after about 10 seconds if I don't give it a partial primer pump or put my fingers over the carb throat. Dies from being too lean. Holding palm over carb throat or giving it a pump of the primer it starts right...
  2. REV Chassis - Performance and Trail Models
    New to the board so hello everyone! Having issues again with my sons 07 blizzard 800 ptek. Rebuilt last year with new cylinders, head and top end due to detonation. He had used low octane fuel is the only thing we could come up and it went boom not long down the trail. He has since put on...
  3. MXZ / Legend / Summit / Grand Touring / Formula
    Hi Guys, Newbie to the forum but here goes. Trying to figure out what happened so it wont happen again - in the near future anyway! ;) Purchased 2007 MXZ XRS early march put 500 miles with no issues other than the odd backfire and slow to start when engine at operating temps. Engine was...
  4. REV-XP/XS Chassis: Perf. Trail 120-129 Inch Models
    my 08 800r gade with engine-tech head, v force-3 and spi y pipe is running lean on upper mid range and WOT i started with 490 main, .20 needle shim, and 17.5 pilot as engine tech instructed. ive now moved up to 520N mains witch improved power very noticably but still runs lean on upper mid and...
  5. REV-XP/XS Chassis: Renegades/Freeride/Backcountry
    Took the sled into the dealer after noticing the past two rides that the throttle response has lost it's snap and after a WOT run of any distance, if you quickly want to get back on the throttle it hesitates and stumbles in the engine briefly. No loss of top end speed or RPM but when I parked...
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