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GEN
INFO
SPECIAL TOOLS
Gauge
90890-03081
YU-33223
Adapter
90890-04082
Compression gauge
Adapter
These tools are needed to measure
engine compression.
90890-03112
YU-03112-C
YU-8036-B
Pocket tester
This instrument is needed for checking the
electrical system.
90890-03113
Engine tachometer
This tool is needed for observing engine
rpm.
90890-03141
YM-33277-A
Timing light
This tool is necessary for checking ignition
timing.
Tool No. Tool name/Function Illustration
90890-01235
YU-01235
Rotor holding tool
This tool is used to remove the flywheel
magneto.
90890-03079
YM-34483
Thickness gauge
This tool is used to measure the valve
cleanance.
Bond
90890-85505
Sealant
ACC-11001-05-01
Yamaha bond No. 1215
Sealant (Quick Gasket
®
)
This sealant (bond) is used on crankcase
mating surfaces, etc.
Compressor
90890-04019
YM-04019
Attachment
90890-04108
YM-04108
Valve spring compressor
Valve spring compressor attachment
This tool is needed to remove and install
the valve assemblies.