Yamaha WR450F -Picture Gallery
Yamaha 4th and 5th Gear Ignition Stutter at Low Throttle - Notice the speed, power, and that the air/fuel ratio is good |
Yamaha WR Stutter at Light Load - Spikes are ignition stutter recorded by the dyno electronics at low throttle |
Yamaha Ignition Stutter at light load - Notice that the air/fuel ratio is good |
Yamaha Ignition Stutter at light load - Notice the frequency of ignition spikes from 1 to 3 seconds in spacing |
WR450F Vortex CDI Map 7 - YZ450F (2nd 3rd gears, Light throttle, under 10hp) |
WR450F Stock CDI Map (2nd 3rd gears, Light throttle, under 10hp) |
WR450F Vortex CDI Map 7 - YZ450F (2nd 3rd 5th gears, Light throttle, under 10hp) |
WR450F Stock CDI Map (2nd 3rd 5th gears, Light throttle, under 10hp) |
FCR Standard (98-99 YZ/WR400) pilot jet on left, and newer FCR-MX pilot jet (2000+ YZ/WR 400-450) and PWK pilot jet on right |
click on thumbnails for full image