P 1
8
/ 1
8
R
epair
[4] DISASSEMBLY/ASSEMBLY
[4]-15. Engine block (cont.)
(6) Adjust the valve clearance as follows:
• Align the marking on Flywheel with the marking on Ignition coil. (
Fig. 74
)
• Align the marking on Cam gear assembly with the marking on Cylinder block. (
Fig. 75
)
• Assemble two Cam lifters and two Rod 2.5, and then assemble two Rocker arm assembly to them.
Note
: The ends of Rod 2.5 have to be put into the round depressions of Cum lifter and Rocker arm.
• Loosen the adjust screws of Rocker arm assembly with 1R170, and put 0.1mm thickness gauge of 1R366 between
valves and Rocker arms.
Then adjust the valve clearance. (
Fig. 76
)
• After the adjustment, tighten the nuts of Rocker arm assembly, remove 0.1mm thickness gauge of 1R366.
Fig. 74
Fig. 65
Fig. 75
Fig. 76
ASSEMBLING
Marking on Ignition coil
Marking on Flywheel
Marking on
Cam gear
assembly
Marking on
Cylinder block
1R170
Hex socket head bolt
(
M5×16)
Hex socket head bolt (M4×10)
Hex socket head bolt (M5×16)
Flange nut (M8)
Hex socket head bolt (M4×20,
W
,S
W
,MEC)
Hex socket head bolt
(
M5×16)
Nut (M5)
Hex socket head bolt (M5×16)
Clutch bolt (M6×25)
Hex socket head bolt (M5×40,
W
,MEC)
M10×P1.0
Hex socket head bolt (M5×18,
W
,SW)
Hex socket head bolt (M5×18,
W
,SW)
M8
Hex socket head bolt (M5×16,
W
,SW)
Hex socket head bolt (M5×14,
W
,SW)
Hex socket head bolt (M5×14,
W
,SW)
Pan head screw (M5×20)
Nut (M6)
Cylinder block and Crank case
Crank case and Retainer plate
Crank case and Oil case
Flywheel and Crank shaft 1
Coil and Cylinder block
Cam gear cover and Cylinder block
Rocker arm adjusting screw and Nut
Rocker cover outer and Cylinder block
Clutch and Flywheel
Muffler and Cylinder block
S
park plug and Cylinder block
Iinsulator and Cylinder block
Clutch case and Cylinder, Crank case
Pulley and Crank shaft 2
Recoil starter and Cylinder, Crank case
Muffler plate and Crank case
Oil pipe and Oil case
Control lever assembly and Shaft pipe complete
Control case and Insulator
6.0
3.0
6.0
16.0
4.0
6.0
6.0
6.0
9.0
8.0
1
1.0
5.0
5.0
6.0
5.0
5.0
5.0
3.0
2.0
Tightening torque (N
･
m)
Screw/ Nut
Parts to fasten
[4]-15. Tightening torque specifications
1R366
