Operation Manual

GEN
INFO
1 - 7
SPECIAL TOOLS
EC140001
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-” or “ACC-”.
● For others, use part number starting with “90890-”.
Part number Tool name/How to use Illustration
YU-1135-A, 90890-01135 Crankcase separating tool
These tool is used to remove the crankshaft from
either case.
YU-1135-A 90890-01135
YU-1235, 90890-01235 Rotor holding tool
This tool is used when loosening or tightening the fly-
wheel magneto securing nut.
YU-1235 90890-01235
YU-3097, 90890-01252
YU-1256
Dial gauge and stand
Stand
These tools are used to check each part for runout or
bend.
YU-3097
YU-1256
90890-01252
YU-90050, 90890-01274
YU-90050, 90890-01275
YU-91044, 90890-04081
YM-1277, 90890-01277
Crankcase installing tool
Pot
Bolt
Spacer
Adapter
These tools are used to install the crankshaft.
YU-90050
YM-1277
YU-91044
90890-01274
90890-01275
90890-01277
90890-04081
YU-1304, 90890-01304 Piston pin puller
This tool is used to remove the piston pin.
YU-1304 90890-01304
YU-24460-01, 90890-01325
YU-33984, 90890-01352
Radiator cap tester
Adapter
These tools are used for checking the cooling sys-
tem.
YU-24460-01
YU-33984
90890-01325
90890-01352
YM-1189, 90890-01189 Flywheel puller
This tool is used to remove the flywheel magneto.
YM-1189 90890-01189