Tightening Specifications
| Combustion Chamber Volume | 47.1-50.1 cc | |
| Gasket Surface Flatness | 0.018 mm (0.0007 in) | |
| Valve Guide Bore Diameter - Intake and Exhaust | 8.011-7.986 mm (0.315-0.314 in) | |
| Cylinder Head Retaining Bolts Always use new cylinder head bolts when installing cylinder head or damage to engine will occur. | Step 1 | 50 Nm (37 ft.lb) |
| Step 2 | Back off all bolts 360° | |
| Step 3 | 30 Nm (22 ft.lb) | |
| Step 4 | Rotate 90° | |
| Step 5 | Rotate an additioanal 90° |