Rato R80, Maintenance Manual, Page: 21 / 79

Part II Dimension and Torque
17
R300-
R420-V M8×35 10.9-A 42±2 gasket -
crankcase
8
Rocker arm
shaft bolt
R80-V
R210-V
R300-
R420-V
Hexagon
flange bolt
M8×1.25 8.8-A
M8×1.25 8.8-A
M8×1.25 8.8-A
24±2
Rocker arm
shaft bolt -
cylinder head
assembly
9
Cylinder head
cover
assembly
R80-V
R210-V
R300-
R420-V
Hexagon
flange bolt
M6×12 8.8-A
M6×12 8.8-A
--
10 ±
1
Cylinder head
cover
assembly -
cylinder head
cover gasket -
cylinder head
assembly
10 Spark plug
R80-R440-
V Provided
thread
M14×1.25 28±2
Spark plug -
cylinder head
assembly
11
Air director of
cylinder block
R80-V
R210-V
R300-
R420-V
Hexagon
flange bolt
M6×10 8.8-A
M6×8 8.8-A
M6×12 8.8-A
10±2
Air director of
cylinder block
- cylinder head
assembly
12 Lower cover
R80-V
R210-V
R300-
R420-V
Hexagon
flange bolt
--
M6×16 8.8-A
--
10±2
Lower cover -
crankcase
13 Oil protector
R80-V
R210-V
R300-
R420-V
Hexagon
flange bolt
--
M6×12 8.8-A
M6×12 8.8-A
8±2
Oil protector -
crankcase
14 Air director
R80-V
R210-V
R300-
R420-V
Hexagon
flange bolt
M6×12 8.8-A
M6×12 8.8-A
M6×12 8.8-A
10±2
Air director -
crankcase
15
Hand starter
components
R80-V
R210-V
R300-
R420-V
Hexagon
flange bolt
M6×8 8.8-A
M6×8 8.8-A
M6×8 8.8-A
10±2
hand starter
components -
air director
16 Air filter R80-R420
Hexagon
flange nut
M6 8-A 10±2
Air filter - air
filter gasket -