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  1. MXZ / Legend / Summit / Grand Touring / Formula
    Hey folks need some advice. Been fighting an issue with my 2005 MXZ 550f all winter. Had the coil pack replaced a year ago due to starting issues at a shop. Apparently had low spark... Also they rebuilt the carbs. After that ran ok but it ran out of gas on the wife at about 60 miles. Tank...
  2. REV-GEN 4 & 5 MXZ Perf. Trail 129/ Renegade 137
    Thought I would share the story of how a bad starter being replaced cost me 1200 peak rpm.. Sorry in advance for the long book. 2018 Renegade 850 XRS, bought it new. At about 8000 miles, pulled off to the side of the trail and the starter failed, wouldn't even freewheel. Never even hiccuped...
  3. Skandic / Expedition
    Hello, I need some help. I have a 05 ski doo expedition tuv v1000. I got this ski completely disassembled when purchased. I have rebuilt both cylinders, new chains, plugs and cam(bolts sheared off) . Manuel is very unclear about timing. I do know I need the crank locked in tdc as well as front...
  4. REV-XP/XS Chassis: Perf. Trail 120-129 Inch Models
    would like to know if somebody found a way to make thoses exhaust valves open sooner in powerband ... to bring the last step (full;y open) down in rpm she d like some more flow around 6000-6500 rpm thanks to share ( i can trade again 800rs builts ;)
  5. Vintage Ski Doo's
    Hello, I have a failed PTO seal on my 503. Today when I was pulling it appart I noticed the flywheel has to keyways cut in it. Is this standard or has someone done a mod ? Thanks & Take Care Roy
  6. MXZ / Legend / Summit / Grand Touring / Formula
    I'm just in the process of rebuilding my 96 formula 3 600 top and bottom end and I've come to the last bit of the rebuild and have no idea how to set the flywheel/timing on this thing , also the flywheel I had before isn't balanced properly , can I run a flywheel out of a Mach z in my triple ...
  7. Mach Z / Mach 1 / Formula III Triples
    Hi everyone. First off thanks for looking at this post. My problem is finding the timing mark on the magneto to time this motor with a timing light. I can find the little dot on the trigger point no problem. I have this lined up on the middle of the trigger at .083 btdc. The problem I have...
  8. MXZ / Legend / Summit / Grand Touring / Formula
    Hi everyone. First off thanks for looking at this post. My problem is finding the timing mark on the magneto to time this motor with a timing light. I can find the little dot on the trigger point no problem. I have this lined up on the middle of the trigger at .083 btdc. The problem I have...
  9. Vintage Ski Doo's
    I have been fighting this engine for a while. Replaced condenser, rebuilt carb. I have a great spark, fuel on new plug. But I have adjusted this timing 100 times and I can't seem to get points to open before tdc. What can I do to get this to fire at the right time?
  10. Vintage Ski Doo's
    Hi All! I am trying to set the timing on my 77 Olympic. I have made a timing light which is working well. I have set the timing on the magneto side so that the bright light dims just as the points open and the timing marks align. However, when I go to set the clutch side, I am having trouble...
  11. Vintage Ski Doo's
    Hi All, I am in the process of setting the timing on my 77 340E olympic. Could anyone explain how all the advanced timing parts (e.g.. spring loaded lever) work together? I have looked at various manuals that tell me how to set the timing, but they don't explain very well how all the parts...
  12. MXZ / Legend / Summit / Grand Touring / Formula
    hey guys im just finishing my first re build. i got a free 2001 380 fan cooled touring with rer with a blown motor. i bought a new block off ebay and took everything off the old motor carbs ignition ect. and put it on the new block. the sled runs now but its hard to start and i wanna make sure...
  13. MXZX Race Sleds
    ok so i noticed yesterday my rs didn't seem to have the power it used too, wouldn't even idle for very long. on the way back from the ride i also ran it dry which didn't help. now today had a little trouble starting it and after about 15 minutes of ride i shut it off then all i got was...
  14. Mach Z / Mach 1 / Formula III Triples
    I've got a Formula III that I will be running next year in an oval racing class. The class does not allow any porting, but it doesn't have any limits on what thickness base gasket you can use. Race fuel can be used in the class. I am wondering if I'm better off using a thin base gasket to...
  15. Vintage Ski Doo's
    So last year my 1980 Ski Doo Citation 4500 ran great till the end of the season when it started to loose a spark in one cylinder intermittently and had to limp back to garage. I replaced the plugs a few times with varied results. I put it away till now as snow is on the ground. At this time I...
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