Yamaha WR250F(W) Service Manual download pdf (Page 12)

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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.

• For U.S.A. and Canada, use part number starting with "YM-", "YU-" or "ACC-".

• For others, use part number starting with "90890-".

Tool name/Part number How to use Illustration

Crankcase separating tool

YU-1135-A, 90890-01135

These tool is used to remove the

crankshaft from either case.

Dial gauge and stand

YU-3097, 90890-01252

Stand

YU-1256

These tools are used to check each

part for runout or bent.

Crankshaft installing tool

Crankshaft installing pot

YU-90050, 90890-01274

Crankshaft installing bolt

YU-90050, 90890-01275

Spacer (crankshaft installer)

YU-91044, 90890-04081

Adapter (M12)

YU-90063, 90890-01278

These tools are used to install the

crankshaft.

Piston pin puller set

YU-1304, 90890-01304

This tool is used to remove the pis-

ton pin.

Radiator cap tester

YU-24460-01, 90890-01325

Radiator cap tester adapter

YU-33984, 90890-01352

These tools are used for checking

the cooling system.

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Yamaha WR250F(W) Service Manual Page 12