Clutch Specifications For Your 1997-2001 Yamaha YZ125
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Clutch Service Specifications
| New – mm (in.) | Service Limit – mm (in.) | |
| Clutch Spring Free Length | 40.1 (1.58) | 38.1 (1.5) |
| Friction Disc Thickness | 2.9 – 3.1 (0.114 – 0.122) | 2.7 (0.106) |
| Steel Plate Thickness | 1.5 – 1.7 (0.059 – 0.067) | – |
| Steel Plate Warpage | – | 0.05 (0.002) |
| Number Of Clutch Plates | ||
| – Clutch Plates | 7 | |
| – Friction Discs | 8 |
Clutch Torque Specs
| ft.-lb | in.-lb. | N•n | |
| Clutch Nut | 59 | – | 80 |
| Clutch Spring Bolts | – | 88 | 10 |
| Clutch/Crankcase Cover Bolts | – | 88 | 10 |
| Governor Shaft Allen Bolts | – | 44 | 5 |
| Kickstarter Pedal Bolt | – | 88 | 10 |
| Rear Brake Pedal Bolt | 14 | – | 19 |
| Shift Shaft Return Spring Pin | 22 | – | 30 |
| Shift Lever Bolt | – | 88 | 10 |
| Shift Guide Bolt | – | 88 | 10 |
| Primary Drive Gear | 40 | – | 55 |
