TIGHTENING TORQUE
| Part to be tightened | Part to be tightened | Part name | Thread size | Q'ty | Tightening torque | Tightening torque | Tightening torque | Remarks |
|---|---|---|---|---|---|---|---|---|
| N•m | Kgf•m | ft•lb | ||||||
| ENGINE: | ||||||||
| Crankcase | 1st | Bolt | M6x P1.0 | 6 | 6 | 0.6 | 4.3 | |
| Crankcase | 2nd | Bolt | M6x P1.0 | 6 | 12 | 1.2 | 8.6 | |
| Crankcase | 1st | Bolt | M8x P1.25 | 4 | 15 | 1.5 | 10.8 | |
| Crankcase | 2nd | Bolt | M8x P1.25 | 4 | 30 | 3.0 | 21.6 | |
| Cylinder head | 1st | Bolt | M8x P1.25 | 6 | 15 | 1.5 | 10.8 | |
| Cylinder head | 2nd | Bolt | M8x P1.25 | 6 | 30 | 3.0 | 21.6 | |
| Flywheel | Nut | 1 | 100 | 10.0 | 72 | |||
| Spark plug | 2 | 12.5 | 1.25 | 9 | ||||
| Connecting rod | 1st | Bolt | M6x P1.0 | 4 | 6 | 0.6 | 4.3 | |
| Connecting rod | 2nd | Bolt | M6x P1.0 | 4 | 14 | 1.4 | 8.6 | |
| Exhaust cover | Bolt | 7 | 12 | 1.2 | 8.6 | |||
| Drive gear | Nut | 1 | 22.5 | 2.25 | 16.2 | |||
| Driven gear | Bolt | 1 | 12 | 1.2 | 8.6 | |||
| UPPERCASE AND GEAR CASE: | ||||||||
| Bracket bolt | Nut | 1 | 20 | 2.0 | 14.4 | |||
| Tilt stop lever | Bolt | 2 | 12 | 1.2 | 8.7 | |||
| Upper side mount rubber | Nut | 2 | 21 | 2.1 | 15.1 | |||
| Pinion nut | Nut | 1 | 25 | 2.5 | 18 | |||
| Propeller | Nut | 1 | 17 | 1.7 | 12 |
GENERAL TORQUE SPECIFICATIONS
This chart specifies torque for standard fasteners with standard I.S.O. pitch treads.
Torque specifications for special components or assemblies are included in the applicable sections of this book. To avoid warpage, tighten multi-fastener assemblies in a crisscross fashion and in progressive stages until full torque is reached. Unless otherwise specified, torque specifications call for clean, dry threads. Components should be at room temperature.
| A (Nut) | B (Bolt) | General torque specifications | General torque specifications | General torque specifications |
|---|---|---|---|---|
| Nm | m•kg | ft•lb | ||
| 8 mm | M5 | 4.0 | 0.4 | 2.9 |
| 10 mm | M6 | 8.0 | 0.8 | 5.8 |
| 12 mm | M8 | 18 | 1.8 | 13 |
| 14 mm | M10 | 36 | 3.6 | 25 |
| 17 mm | Ml2 | 42 | 4.2 | 30 |
