Yamaha YZ125 2019 Owner's Service Manual page 22

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 tech-
niques. The shape and part number used for the special tool differ by country, so two types are pro-
vided. 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
Crankcase separating tool
YU-01135-B, 90890-01135
Flywheel puller
YM-01189, 90890-01189
Rotor holding tool
YU-01235, 90890-01235
Dial gauge & stand set
YU-03097-B, 90890-01252
Crankshaft installer pot
YU-90058, 90890-01274
Crankshaft installer bolt
YU-90060, 90890-01275
Adapter (M12)
YU-90063, 90890-01278
Adapter (M8)
YU-01499, 90890-01499
Piston pin puller set
YU-01304, 90890-01304
How to use
These tool is used to remove
the crankshaft from either
case.
This tool is used to remove
the flywheel magneto.
This tool is used when loos-
ening or tightening the fly-
wheel magneto securing nut.
These tools are used to check
each part for runout or bent.
These tools are used to install
the crankshaft.
This tool is used to remove
the piston pin.
1-8
SPECIAL TOOLS
Illustration