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SPECIAL TOOLS
EB102001
SPECIAL TOOLS
The following special tools are necessary for complete and accurate tune-up and assembly. Use
only the appropriate special tools; this will help prevent damage caused by the use of inappropriate
tools or improvised techniques. Special tools may differ by shape and part number from country to
country. In such a case, two types are provided.
When placing an order, refer to the list provided below to avoid any mistakes.
For US and CDN
P/N. YM-, YU-, YS-, YK-, ACC-
Except for US and CDN
P/N. 90890-
Tool No. Tool name/How to use Illustration
Bolt
90890-01083
Weight
90890-01084
Set
YU-01083-A
Slide hammer bolt (M6)/weight/set
These tools are used to remove the
rocker arm shafts.
90890-01135
YU-01135-A
Crankcase separating tool
This tool is used to separate the
crankcase.
90890-01225
YM-01225-A
Valve guide remover (7.0 mm)
This tool is needed to remove and
install the valve guides.
90890-04017
YM-04017
Valve guide installer (7.0 mm)
This tool is needed to install the valve
guides.
90890-01227
YM-01227
Valve guide reamer (7.0 mm)
This tool is needed to rebore the new
valve guides.
90890-01235
YU-01235
Rotor holding tool
This tool is needed to hold the starter
pulley when removing/installing the
starter pulley bolt or camshaft
sprocket bolt.
90890-04088
Bolt
90890-01275
Buffer boss installer set
Crankshaft installer bolt
These tools are used to install the
crankshaft.