Yamaha YFM660FS Grizzly 4x4 Supplementary Service Manual page 104

Tool No.
Ring nut wrench
90890-01430
This tool is needed to removing and
YM-38404
installing the middle driven shaft bearing
retainer.
Gear lash measurement tool
90890-01467
YM-01467
This tool is used to measure the gear
lash.
Sheave holder
90890-01701
This tool is needed to hold the primary
YU-01880
sheave when removing or installing the
sheave bolts.
Compression gauge
Set
90890-03081
Adapter (Compression gauge)
YU-33223
Adapter
These tools are needed to measure
90890-04082
YU-33223-3
engine compression.
Pocket tester
90890-03112
YU-03112
This instrument is needed for checking
the electrical system.
Engine tachometer
90890-03113
This tool is needed for observing engine
rpm.
Timing light
90890-03141
YM-33277-A
This tool is necessary for checking igni-
tion timing.
Valve spring compressor
Compressor
Valve spring compressor attachment
90890-04019
YM-04019
Attachment
This tool is needed to remove and install
90890-01243
the valve assemblies.
Middle driven shaft Middle driven shaft bearing driver
bearing driver
Mechanical seal installer
90890-04058
YM-04058-1
Mechanical seal
installer These tools are used to install the water
90890-04078
pump seal.
YM-33221
Tool name/How to use
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SPECIAL TOOLS
Illustration
GEN
INFO