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Thread: carb rejetting

  1. #1
    Join Date
    Jul 2010
    Location
    Williams Lake, British Columbia
    --
    89

    carb rejetting

    so i tinkered with everything I could to make the engine run right, turns out it is running too lean. anybody know what I need to do for carb jets? as in sizes, not how to unscrew them lol

  2. #2
    Join Date
    Nov 2009
    Location
    just below the bridge, Michigan
    --
    1,147
    Have you rebuilt the carb? If not rebuilt it and clean the jets really good. If you have already cleaned the jets really good you want to take the jets out and take them with you to a good snowmobile shop (they seem to have a better selection of jets than motorcycle shops), get the next two sizes larger of each jet.

    You might want to see if you have an air leak somewhere, stock 4 strokes in my experience run great with the factory jets, unless you are very high (in elevation).

  3. #3
    Join Date
    Jul 2010
    Location
    Williams Lake, British Columbia
    --
    89
    I am in canada, but i think the old jet was clogged shut, so we put one of a slightly smaller size in it, so I was wondering where do I buy a factory jetting kit
    3 wheels, dusty trails, gasoline and good times.

  4. #4
    Join Date
    Nov 2009
    Location
    just below the bridge, Michigan
    --
    1,147
    Yeah you guys got snowmobiles there (in Canada that is). Go to where they sell snowmobiles, take your jet, buy the next larger size, or maybe two. If it were me it would take all your jets and buy new ones if one was clogged, or clean them. Wherever they sell and repair sleds or motorcycles they will have jets, you don't need a "factory jet kit". If you download the manual under world class help it should tell you what number jets are factory, buy them at the sled shop.

  5. #5
    Join Date
    Jul 2010
    Location
    Williams Lake, British Columbia
    --
    89
    that's twice you helped me now, thanks
    3 wheels, dusty trails, gasoline and good times.

  6. #6
    Join Date
    Nov 2009
    Location
    just below the bridge, Michigan
    --
    1,147
    No prob, lots of people have helped me out before.

  7. #7
    Join Date
    Apr 2008
    Location
    NW, IND.
    --
    842
    +1... 200x Might want to put on an inline filter too...
    80' Honda CR80R
    78' Honda XR75
    77' Honda CT-70
    74' Honda CT-70
    75' Yamaha GT80 Enduro
    76' Kawasaki KZ900
    73' Kawasaki H1-500
    76' Kawasaki H1-500
    They always run best before they blow!
    Manuals: http://www.oscarmayer.net/atc/manuals/


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