EAS20260
SPECIAL TOOLS
The following special tools are necessary for complete and accurate tune-up and assembly. Use
only the appropriate special tools as this will help prevent damage caused by the use of inappropri-
ate tools or improvised techniques. Special tools, part numbers or both may differ depending on the
country.
When placing an order, refer to the list provided below to avoid any mistakes.
NOTE:
• 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/Tool No.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Valve lapper
90890-04101
Valve lapping tool
YM-A8998
Vacuum gauge
90890-03094
Carburetor synchronizer
YU-44456
Compression gauge
90890-03081
Engine compression tester
YU-33223
Illustration
YU-44456
1-15
SPECIAL TOOLS
Reference
pages
1-14, 5-34, 8-
83, 8-84, 8-85,
8-89, 8-90, 8-
91, 8-92, 8-93,
8-94, 8-95, 8-
96, 8-97, 8-98,
8-99, 8-100, 8-
101
3-5
3-7
3-10