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carb problems

  1. Raptor 660 runs but sputters and glows red

    Yamaha YFM660R Raptor (2001-2005)
    so recently i purchased a 660r raptor it has everything stock except the exhaust which is a yoshimura offroad slip on and headers. It runs but it glows cherry red on the headers, do i need to jet for just a pipe ? if so how much would i need to go up on the mains. i live in hillsborough nb and...
  2. Bike Bogging/Stuttering 3/4 - Full Throttle

    Yamaha YFM660R Raptor (2001-2005)
    Bike Bogging/Stuttering 3/4 - Full Throttle [SOLVED] Ok so i have a 2004 Raptor 660 with 102mm bore, +4 stroker crank, Yoshimura Exhaust, K&N filter (air box stock). Jets #25 Pilot 180/185 Main jets. It starts and Idles PERFECT. Couldn't ask for any better however, I had a friend jet it for...
  3. Carburetor problems

    Yamaha YFM350 Raptor/Warrior ('87-Present)
    I have been having issues with my carb. About a year and a half ago, I couldn't get it to idle with the choke off woo I took it to a guy and for $100 he cleaned it up and adjusted it. Ran great. So before I put it away for the summer, I ran the gas out of it. I went to start it again to get...