Yamaha 2003 YZ450FR Owner's Service Manual page 25

Part number
YM-4117, 90890-04117 Valve guide installer
YM-4098, 90890-04098
This tool is needed to install the valve guide.
YM-4118, 90890-04118 Valve guide reamer
YM-4099, 90890-04099
This tool is needed to rebore the new valve guide.
YM-34487 Dynamic spark tester
90890-06754 Ignition checker
This instrument is necessary for checking the ignition
system components.
ACC-QUICK-GS-KT Quick gasket
90890-85505 YAMAHA Bond No. 1215
This sealant (Bond) is used for crankcase mating
surface, etc.
Tool name/How to use
Intake
Exhaust
Intake 4.5 mm (0.18 in)
Exhaust 5.0 mm (0.20 in)

SPECIAL TOOLS
YM-4117
YM-4098
YM-4118
YM-4099
YM-34487
ACC-QUICK-GS-KT
1 - 9
GEN
INFO
Illustration
90890-04117
90890-04098
90890-04118
90890-04099
90890-06754
90890-85505