Yamaha 2003 YZ450FR Owner's Service Manual page 24

Part number
YU-33975, 90890-01403 Ring nut wrench
This tool is used when tighten the steering ring nut to
specification.
YM-1423, 90890-01423 Damper rod holder
Use this tool to remove and install the damper rod.
YM-01442, 90890-01442 Fork seal driver
This tool is used when install the fork oil seal.
YU-3112-C, 90890-03112 Yamaha pocket tester
Use this tool to inspect the coil resistance, output
voltage and amperage.
YU-8036-B Inductive tachometer
90890-03113 Engine tachometer
This tool is needed for observing engine rpm.
YM-33277-A, 90890-03141 Timing light
This tool is necessary for checking ignition timing.
YM-4019, 90890-04019 Valve spring compressor
This tool is needed to remove and install the valve
assemblies.
YM-91042, 90890-04086 Clutch holding tool
This tool is used to hold the clutch when removing or
installing the clutch boss securing nut.
YM-4116, 90890-04116 Valve guide remover
YM-4097, 90890-04097 Intake 4.5 mm (0.18 in)
Exhaust 5.0 mm (0.20 in)
This tool is needed to remove and install the valve
guide.
Tool name/How to use
1 - 8
SPECIAL TOOLS
Illustration
YU-33975
YM-1423
YM-01442
YU-3112-C
YU-8036-B
YM-33277-A
YM-4019
YM-91042
YM-4116
YM-4097
GEN
INFO
90890-01403
90890-01423
90890-01442
90890-03112
90890-03113
90890-03141
90890-04019
90890-04086
90890-04116
90890-04097