A SERVICE OF

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GEN
INFO
90890-04101
Valve lapper
This tool is needed to remove and
install the valve lifter.
90890-05158
Piston ring compressor
This tool is used to compress the piston
rings when installing the piston into the
cylinder.
90890-06754
Ignition checker
This tool is used to check the ignition
system components.
90890-06756
Vacuum/pressure pump gauge set
This tool used to measure the vacuum
pressure.
90890-06760
Engine tachometer
This tool is needed for observing engine
rpm.
90890-85505
Yamaha Bond No. 1215
This sealant (bond) is used on crank-
case mating surfaces, etc.
90890-04140
Bearing retainer wrench
This tool is needed when removing or
installing the middle driven shaft bear-
ing retainer.
90890-03176
Fuel pressure adapter
This tool is needed to measure fuel
pressure.
Tool No. Tool name/Function Illustration
SPECIAL TOOLS