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2007 WR450F – Accelerator Pump Linkage

2007 WR450F – Accelerator Pump Linkage
2007 WR450F - Accelerator Pump Linkage
Yamaha WR450F -Picture Gallery

2007 WR450F- Gray Wire Unplugged

2007 WR450F- Gray Wire Unplugged
2007 WR450F- Gray Wire Unplugged
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 4th and 5th Gear Ignition Stutter at Low Throttle – Notice the speed, power, and that the air/fuel ratio is good
Yamaha 4th and 5th Gear Ignition Stutter at Low Throttle - Notice the speed, power, and that the air/fuel ratio is good YAMAHA IGNITION STUTTER IS NOT A JETTING PROBLEM! TRY DISCONNECTING THE THROTTLE POSITION SENSOR (TPS)AND COMPARE RESULTS - ELECTRONICS PLUG FROM THE CARBURETOR
Yamaha WR450F -Picture Gallery

2007 WR450F – Gray Wire in 6 pin connector

2007 WR450F – Gray Wire in 6 pin connector
2007 WR450F - Gray Wire in 6 pin connector
Yamaha WR450F -Picture Gallery

WR450F Vortex CDI Map 7 – YZ450F (2nd 3rd 5th gears, Light throttle, under 10hp)

WR450F Vortex CDI Map 7 – YZ450F (2nd 3rd 5th gears, Light throttle, under 10hp)
WR450F Vortex CDI Map 7 - YZ450F (2nd 3rd 5th gears, Light throttle, under 10hp)
Yamaha WR450F -Picture Gallery

2007 WR450F

2007 WR450F
2007 WR450F
Yamaha WR450F -Picture Gallery

2007 WR450F – Carburetor Needle Access

2007 WR450F – Carburetor Needle Access
2007 WR450F - Carburetor Needle Access
Yamaha WR450F -Picture Gallery

Yamaha Ignition Stutter at light load – Notice the frequency of ignition spikes from 1 to 3 seconds in spacing

Yamaha Ignition Stutter at light load – Notice the frequency of ignition spikes from 1 to 3 seconds in spacing
Yamaha Ignition Stutter at light load - Notice the frequency of ignition spikes from 1 to 3 seconds in spacing YAMAHA IGNITION STUTTER IS NOT A JETTING PROBLEM! TRY DISCONNECTING THE THROTTLE POSITION SENSOR (TPS)AND COMPARE RESULTS - ELECTRONICS PLUG FROM THE CARBURETOR
Yamaha WR450F -Picture Gallery

WR450F Stock CDI Map (2nd 3rd 5th gears, Light throttle, under 10hp)

WR450F Stock CDI Map (2nd 3rd 5th gears, Light throttle, under 10hp)
WR450F Stock CDI Map (2nd 3rd 5th gears, Light throttle, under 10hp)
Yamaha WR450F -Picture Gallery

2007 WR450F – Dyno Testing

2007 WR450F – Dyno Testing
2007 WR450F - Dyno Testing
Yamaha WR450F -Picture Gallery

WR450F Vortex CDI Map 7 – YZ450F (2nd 3rd gears, Light throttle, under 10hp)

WR450F Vortex CDI Map 7 – YZ450F (2nd 3rd gears, Light throttle, under 10hp)
WR450F Vortex CDI Map 7 - YZ450F (2nd 3rd gears, Light throttle, under 10hp)
Yamaha WR450F -Picture Gallery

2007 WR450F – Main Jet Location

2007 WR450F – Main Jet Location
2007 WR450F - Main Jet Location
Yamaha WR450F -Picture Gallery

2007 WR450F – Gray Wire behind Side Panel

2007 WR450F – Gray Wire behind Side Panel
2007 WR450F - Gray Wire behind Side Panel
Yamaha WR450F -Picture Gallery

Yamaha WR Stutter at Light Load – Spikes are ignition stutter recorded by the dyno electronics at low throttle

Yamaha WR Stutter at Light Load – Spikes are ignition stutter recorded by the dyno electronics at low throttle
Yamaha WR Stutter at Light Load - Spikes are ignition stutter recorded by the dyno electronics at low throttle YAMAHA IGNITION STUTTER IS NOT A JETTING PROBLEM! TRY DISCONNECTING THE THROTTLE POSITION SENSOR (TPS)AND COMPARE RESULTS - ELECTRONICS PLUG FROM THE CARBURETOR
Yamaha WR450F -Picture Gallery

2007 WR450F – Quick Access Filter

2007 WR450F – Quick Access Filter
2007 WR450F - Quick Access Filter
Yamaha WR450F -Picture Gallery

2007 WR450F

2007 WR450F
2007 WR450F
Yamaha WR450F -Picture Gallery

WR450F Stock CDI Map (2nd 3rd gears, Light throttle, under 10hp)

WR450F Stock CDI Map (2nd 3rd gears, Light throttle, under 10hp)
WR450F Stock CDI Map (2nd 3rd gears, Light throttle, under 10hp)
Yamaha WR450F -Picture Gallery

2007 WR450F

2007 WR450F
2007 WR450F
Yamaha WR450F -Picture Gallery

Yamaha Ignition Stutter at light load – Notice that the air/fuel ratio is good

Yamaha Ignition Stutter at light load – Notice that the air/fuel ratio is good
Yamaha Ignition Stutter at light load - Notice that the air/fuel ratio is good YAMAHA IGNITION STUTTER IS NOT A JETTING PROBLEM! TRY DISCONNECTING THE THROTTLE POSITION SENSOR (TPS)AND COMPARE RESULTS - ELECTRONICS PLUG FROM THE CARBURETOR
Yamaha WR450F -Picture Gallery

2007 WR450F – Airbox Snorkel Removed

2007 WR450F – Airbox Snorkel Removed
2007 WR450F - Airbox Snorkel Removed
Yamaha WR450F -Picture Gallery
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