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  1. Yamaha Snowmobiles
    Hello, I have a 1979 Yamaha EX440 that needs a new CDI. I tried a 1984 SRV540 CDI box that I had laying around and it doesn't seem to work right. I have spark but it doesn't start. Are the CDIs different from one another in how they signal the spark? Thanks
  2. Vintage Snowmobiles
    Got 2 SS440’s that have been sitting for a few years cleaned the gas tank, carb and put in new fuel line. I got the thing started and once I turn the choke off it idles up to about 3000rpm then bogs our and dies. I’ve tried adjusting the idle screw but it does nothing. When the choke is on I can...
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