The following special tools are required for accurate and complete adjustment and assembly. Using the correct special tool will help prevent damage caused by the use of improper tools or improvised techniques. The shape and tool 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 tool number starting with “YM-”, “YU-”, or “ACC-”.
For others, use tool number starting with “90890-”.
| Tool name/Tool No. | Illustration |
|---|---|
| Digital circuit tester (CD732) 90890-03243 Model 88 Multimeter with tachometer YU-A1927 |
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| Thickness gauge 90890-03268 Feeler gauge set YU-26900-9 |
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| Valve lapper (ø14) 90890-04101 Valve lapper (ø14) YM-A8998 |
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| Yamaha diagnostic tool USB (US) 90890-03269 |
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| Yamaha diagnostic tool (A/I) 90890-03264 |
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| FI diagnostic tool sub–lead 90890-03212 FI diagnostic tool sub–lead YU-03212 |
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| OBD/ GST Leadwire kit 90890-03249 |
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| Digital tachometer 90890-06760 Digital tachometer YU-39951-B |
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| Steering nut wrench 90890-01403 Exhaust flange nut wrench YU-A9472 |
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| Spoke nipple wrench (6–7) 90890-01521 Spoke nipple wrench (6–7) YM-01521 |
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| Cap bolt ring wrench 90890-01501 Cap bolt ring wrench YM-01501 |
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| Cap bolt wrench 90890-01500 Cap bolt wrench YM-01500 |
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| Fork seal driver 90890-01502 Fork seal driver (48) YM-A0948 |
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| Yamaha bond No. 1215 90890-85505 Three bond No. 1215® |
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| Valve spring compressor 90890-04200 Valve spring compressor YM-04019 |
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| Valve spring compressor attachment 90890-04108 Valve spring compressor adapter 22 mm YM-04108 |
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| Valve guide remover (ø5) 90890-04097 Valve guide remover (5.0 mm) YM-04097 |
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| Valve guide installer (ø5) 90890-04098 Valve guide installer (5.0 mm) YM-04098 |
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| Valve guide reamer (ø5) 90890-04099 Valve guide reamer (5.0 mm) YM-04099 |
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| Valve guide remover (ø4.5) 90890-04116 Valve guide remover (4.5 mm) YM-04116 |
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| Valve guide installer (ø4.5) 90890-04117 Valve guide installer (4.5 mm) YM-04117 |
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| Valve guide reamer (ø4.5) 90890-04118 Valve guide reamer (4.5 mm) YM-04118 |
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| Piston pin puller set 90890-01304 Piston pin puller YU-01304 |
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| Rotor puller 90890-04151 Rotor puller YM-04151 |
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| Sheave holder 90890-01903 Primary clutch holder YS-01880-A |
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| Clutch holder 90890-04199 Universal clutch holder YM-91042 |
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| Crankcase separating tool 90890-04152 Crankcase separating tool YU-A9642 |
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| Crankshaft installer pot 90890-01274 Installing pot YU-90058 |
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| Crankshaft installer bolt 90890-01275 Bolt YU-90060 |
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| Adapter (M12) 90890-01278 Adapter #3 YU-90063 |
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| Spacer (crankshaft installer) 90890-04081 Pot spacer YM-91044 |
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| Radiator cap tester 90890-01325 Mityvac cooling system tester kit YU-24460-A |
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| Radiator cap tester adapter 90890-01352 Pressure tester adapter YU-33984 |
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| Pressure gauge 90890-03153 Pressure gauge YU-03153 |
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| Fuel pressure adapter 90890-03186 Fuel pressure adapter YM-03186 |
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| Lithium battery charger 90890-05376 Lithium battery charger DBY-ACC51-70-02 |
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| Ignition checker 90890-06754 Oppama pet–4000 spark checker YM-34487 |
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| Test harness S– pressure sensor (3P) 90890-03207 Test harness S– pressure sensor (3P) YU-03207 |
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