Torque Values
| GX160/200 | ||
| Item |
Thread dia. (mm) |
Torque (ft-lbs) |
| Connecting rod bolt | M7 x 1.0 | 9 |
| Cylinder head bolt | M8 x 1.25 | 17 |
| Flywheel nut (special nut) | M14 x 1.5 | 54 |
| Rocker arm pivot lock nut (special nut) | M6 x 0.5 | 7 |
| Rocker arm pivot bolt | M8 x 1.25 | 17 |
| Crankcase cover bolt | M8 x 1.25 | 17 |
| Muffler mounting nuts | M8 x 1.25 | 17 |
| When installing aftermarket parts use manufacturer's torque values | ||
| GX340/390 | ||
| Item |
Thread dia. (mm) |
Torque (ft-lbs) |
| Connecting rod bolt | M8 x 1.25 | 10 |
| Cylinder head bolt | M10 x 1.25 | 25 |
| Flywheel nut (special nut) | M16 x 1.5 | 83 |
| Rocker arm pivot lock nut (special nut) | M6 x 0.5 | 7 |
| Rocker arm pivot bolt | M8 x 1.25 | 17 |
| Crankcase cover bolt | M8 x 1.25 | 17 |
| Muffler mounting nuts | M8 x 1.25 | 17 |
| When installing aftermarket parts use manufacturer's torque values | ||