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  1. Freestyle / Legend / Tundra / Expedition Sport
    Carb started overflowing one day so i bought a rebuild kit and cleaned it because i thought the needle valve wasn’t seating, it didn’t work. The floats are fine and I tried adjusting the float arm multiple times with little to no result. Someone suggested the fuel pump diaphragm needs to be...
  2. Vintage Ski Doo's
    Carb started overflowing one day so i bought a rebuild kit and cleaned it because i thought the needle valve wasn’t seating, it didn’t work. The floats are fine and I tried adjusting the float arm multiple times with little to no result. Someone suggested the fuel pump diaphragm needs to be...
  3. Vintage Classifieds
    I bought a 1985 safari 447 the guy gave me a carb that he said would work for it. But after looking up the info on it, it will not work plus the carb is trashed. The manual says it should be a Mikuni VM34-310. I can not find that carb anywhere and the closest I can find is VM34-275. Can I use...
  4. Vintage Ski Doo's
    I'm new to snowmobiles, last winter was my first season. Not new to tinkering though, so I'm having a great time working on old sleds. This is my first Ski Doo, a 79 elan with the 247 single. I had hoped to get the tillotson working correctly but after getting it apart and finding the needle...
  5. Vintage Classifieds
    LOOKING for rebuild kits for my 1980 citation ss / mirage special. Duel carbs mikuni VM30-111 Does any have any Information about these carbs and where to find parts. Dealers around here can not figure out what I am talking about having duel carburetors.
  6. Skandic / Expedition
    My 1993 Skandic II 377 has Mikuni carbs VM 34 428 on PTO side and VM 34 429 on mag side. What is the difference between these two carbs? Also, does anyone have info for the factory settings. Can’t find any info on these carbs.
  7. Mach Z / Mach 1 / Formula III Triples
    I have the 29 NOV 1994 build FIII 600. I cannot find new carb boots for it new. The 1996 and up boots are everywhere (see pic) can these be used? Plug the whole and flip it? What do guys in my situation Doo?
  8. REV-XP/XS Chassis: Renegades/Freeride/Backcountry
    Hi All - Newish snowmobile owner here looking for input on questions about taking my 2016 Renegade sport 600 carb to higher elevation. I ride relatively close to sea level (probably less than 1000ft) either in MN, WI, or the U.P. and everything on my sled is stock. I'm looking to ride the...
  9. MXZ / Legend / Summit / Grand Touring / Formula
    Hi, I have a 1996 Forumula STX. Just rebuilt the 583 motor this summer (failed bearings, PTO side, on the crank). She's running fine now, but I'm trying to make sure that I've installed the carbs on the correct sides. According to my manual the PTO side is a VM-38-325 and the Mag side is a...
  10. Vintage Ski Doo's
    Hi; I am trying to get a '77 Everest 340 going. I now know why its been sitting for so long. Someone 'working' on the carb previously, tried to remove the main jet seat and pooched it. It is a Tillotson HD148B. Anyone know if I can still get any of these seats - preferably in Canada (EC...
  11. MXZ / Legend / Summit / Grand Touring / Formula
    Am I correct thinking that the cabs on my 99 500 fan can have a primer hooked up to the nipples with the rubber caps on them? I know those ports are used for "vacuum balancing" but will it cause any functional issues to hook my primer lines up there? After getting the sled up and running after...
  12. REV Chassis - Performance and Trail Models
    I finally got my 98 formula 3 700 running but it is not running well. At idle the rpm's will pulse between 1000 and 3000 rpm in a fairly consistent pattern. Also when I run the sled there is little to no bottom end(barely spin the track) when it does finally get up to speed it pulls pretty good...
  13. Freestyle / Legend / Tundra / Expedition Sport
    Hi Folks, I recently bought a 97 Tundra II and I am in the middle of fixing it up as it was a little abused. I have a copy of the Shop manual for this year but it leaves me a little lost. In particular 2 areas, 1- What are all the lines and where to route them off the carburetor? and 2 -...
  14. MXZ / Legend / Summit / Grand Touring / Formula
    NEED HELP REMOVING CARBBURETORS ON 2006 SUMMIT 800 PTEC!! I am having troubles getting the carburetors to come out and go back in on my 2006 summit 800 there isn't much room in there because there is a plug in the way, I am thinking that it is the throttle position sensor... Just wondering if...
  15. REV Chassis - Mountain Sleds
    NEED HELP REMOVING CARBBURETORS ON 2006 SUMMIT 800 PTEK!! I am having troubles getting the carburetors to come out and go back in on my 2006 summit 800 there isn't much room in there because there is a plug in the way I am thinking that it is the throttle position sensor... Just wondering if...
  16. REV-XP/XS Chassis: Perf. Trail 120-129 Inch Models
    I have a 2010 Gade Adrenaline with an 800r Ptek that got 4mpg on several tanks of fuel over the weekend. Rode near Munising, MI in temperatures of 35-40 degrees F. Issue remained across two riders, but fuel mileage would return to normal when the rpms were maintained at 6000 rpm and braking...
  17. MXZX Race Sleds
    so i changed the jets in my 440 to a 310 (had 330) i started the sled up after putting everything back into place, sled fired up and it seemed that my sliders were sticker... it would stick at 3000RPM then i would give it gas and it would slowly go back down to 1500RPM i gave it some gas and it...
  18. MXZ / Legend / Summit / Grand Touring / Formula
    I just finished a top end rebuild on my 2004 mxz 800 and at low rpm the engine bogs down and tries to die when I hit the throttle. Once the rpms hit 4500 it takes off and runs great but if I'm idling or creeping along it doesn't want to go until it gets to 4500 rpm. I cleaned the carburetor...
  19. MXZ / Legend / Summit / Grand Touring / Formula
    HI all, Having an issue with cold starting a 1999 formula deluxe 500 fan. For starters, the electric start works, at least it turns over the engine, but it will never start it if it is cold. You need to pull start it and this takes a solid 30 pulls before it fires. I'm hazarding a guess that...
  20. MXZ / Legend / Summit / Grand Touring / Formula
    I am trying to find a carburetor that will eliminate the HAC "high altitude compensator" on my 2002 summit 500 fan cool. It has a cable choke set up not a primer. I found one on ebay that I think will fit but I do not know enough about snowmachine to make a decision. Any help on what carb would...
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