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INFO
SPECIAL TOOLS
SPECIAL TOOLS
The proper special tools are necessary for complete and accurate tune-up and assembly. Using the
correct special tool will help prevent damage caused by the use of improper tools or improvised
techniques. The shape and part number used for the special tool differ by country, so two types are
provided. Refer to the list provided to avoid errors when placing an order.
N
OTE:
● For U.S.A. and Canada, use part number starting with “YM-”, “YU-”, “YS-” or “ACC-”.
● For others, use part number starting with “90890-”.
Part number Tool name/How to use Illustration
YU-1083-A
90890-01084
90890-01085
Slide hammer set
Weight
Slide hammer bolt
These tools are used when removing or installing the
rocker arm shafts.
YU-1083-A 90890-01084
90890-01085
YU-1268, 90890-01268 Ring nut wrench
This tool is used when loosen the steering ring nut to
specification.
YU-1268 90890-01268
YU-3112-C, 90890-03112 Pocket tester
Use this tool to inspect the coil resistance, output
voltage and amperage.
YU-3112-C 90890-03112
YU-8036-B
90890-03113
Inductive tachometer
Engine tachometer
This tool is needed for observing engine rpm.
YU-8036-B 90890-03113
YM-4019, 90890-04019 Valve spring compressor
This tool is needed to remove and install the valve
assemblies.
YM-4019 90890-04019
YM-1300
90890-01294
Damper rod holder set
Damper rod holder
Use this tool to remove and install the damper rod.
YM-1300 90890-01294
YU-1304, 90890-01304 Piston pin puller set
This tool is used to remove the piston pin.
YU-1304 90890-01304