Yamaha YZ450FF 1SL-28199-11 Owner's Service Manual page 28

Tool name/Part number
Valve spring compressor
90890-04019
YM-04019
Spacer (crankshaft installer)
90890-04081
Pot spacer
YM-91044
Clutch holder
90890-04086
YM-91042
Valve lapper
90890-04101
Valve lapping tool
YM-A8998
Valve spring compressor
adapter 22 mm
90890-04108
YM-04108
Rotor puller
90890-04151
YM-04151
How to use
This tool is used to discon-
nect or connect the valve and
the valve spring.
This tool is used to install the
crankshaft.
This tool is used to hold the
clutch when removing or in-
stalling the clutch boss secur-
ing nut.
This tool is used to remove
the valve lifter or lap the
valve.
This tool is used to discon-
nect or connect the valve and
the valve spring.
This tool is used to remove
the rotor.
1-16
SPECIAL TOOLS
Illustration
YM-04019
YM-91044