- Fit the dowel pins and new gaskets 1 to the crankcase front and rear.
Caution: Use the new gaskets to prevent oil leakage.
- Apply a small quantity of MOLYBDENUM OIL SOLUTION to the sliding surface of the pistons and cylinder walls.
Molybdenum oil solution
Note: The cylinders can be distinguished by the embossed-letters, "FR" and "RR".
- "FR": Front (#2) cylinder
- "RR": Rear (#1) cylinder
- Hold the piston rings in proper position, and insert each of the pistons into the respective cylinders.
- Tighten the cylinder nuts temporarily.
Cylinder head
- Pull the cam chains out of the cylinders and install the cam chain guides No. 2 1.
Note: There are the guide holders for the bottom ends of each cam chain guide cast in the crankcase. Be sure that the cam chain guides are inserted properly.
- Fit the dowel pins and new cylinder head gaskets 2 to the cylinders, front and rear.
Caution: Use the new gaskets to prevent gas leakage.
Note: The cylinder heads can be distinguished by the embossed-letters, "F" and "R".
- "F": Front (#2) cylinder
- "R": Rear (#1) cylinder
- Place the front and rear cylinder head on the cylinder.
Note: When installing the cylinder head, keep the cam chain taut.
- Tighten the cylinder head bolts (M10) to the specified two step torque with a torque wrench sequentially and diagonally.
Cylinder head bolt (M10):
- Initial 25 Nm (2.5 kgf·m, 18.0 lb·ft)
- Final 42 Nm (4.2 kgf·m, 30.5 lb·ft)
- Tighten the other bolts (M6) and (M8) to the a little at a time to equalize the pressure.
Crankcase bolt:
- (M6) 11 N·m (1.1 kgf·m, 8.0 lb-ft)
- (M8) 26 N·m (2.6 kgf·m, 19.0 lb-ft)
Note: Apply engine oil to the both side of washers A and thread portion of the bolts before installing the cylinder head bolts.
А. 8 mm and 10 mm bolts
- Tighten the front and rear cylinder nuts to the specified torque.
Cylinder nut:
- 13 N·m (1.3 kgf·m, 9.5 lb·ft)