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  1. K

    300/440/550 650sx Overheating/Cooling Issues

    I took out my "new" '87 650sx yesterday and things were going excellent until about 30 minutes or so into the ride. I launched the ski at a boat ramp and took a ride out of the marina which was about 15-20 minutes or so at a idle/high idle. I got out of the marina and started running the ski...
  2. K

    300/440/550 650SX Factory Service Manuals

    Hi, Does anyone know if there are any major differences in the factory manuals from model years '87-'93? Does anyone know of a website where I can download both the base and supplemental manuals? Thanks.
  3. K

    300/440/550 650SX Carb Identification

    Can anyone help me identify or tell me how to identify the Mikuni carb in this 650 I just bought? I don't know if it's a 44mm, 38mm, or ? The second picture is of a switch that is mounted on the right handlebar. What does this do? I'm guessing it's a primer because after I turn it on, it...
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