18
SERVICE SPECIFICATIONS AND SPECIAL TOOLS
STANDARD TORQUE SPECIFICATIONS
STANDARD TORQUE SPECIFICATIONS
Tightening Torque – Important Fasteners
ITEM
THREAD
DIAMETER
TIGHTENING TORQUE
N·m
kg-m
lb-ft
Cylinder head cover bolt
6 mm
10
1.0
7.2
Cylinder head bolt
10 mm
55
5.5
39.8
Crankcase bolt
8 mm
23
2.3
16.6
10 mm
50
5.0
36.2
Conrod cap bolt
7 mm
12
1.2
8.7
Rocker arm pivot bolt
8 mm
23
2.3
16.5
Valve adjusting lock nut
6 mm
11
1.1
8.0
Oil pressure switch
—
13
1.3
9.5
Oil relief valve spring retainer
16 mm
28.5
2.9
21.0
Intake manifold bolt
8 mm
25
2.5
18.1
Carburetor mounting bolt
6 mm
10
1.0
7.0
Fuel pump bolt
6 mm
10
1.0
7.0
Thermostat cover bolt
6 mm
10
1.0
7.0
Flywheel bolt
16 mm
196
19.6
142
Starter motor mounting bolt
8 mm
23
2.3
16.5
Engine oil filter
—
14
1.4
10.0
Engine oil drain plug
12 mm
13
1.3
9.5
Power unit mounting bolt
8 mm
23
2.3
16.5
10 mm
50
5.0
36.0
Water pressure valve cover bolt
6 mm
10
1.0
7.0
Driveshaft housing bolt
8 mm
23
2.3
16.5
Upper mount bolt/nut
10 mm
50
5.0
36.0
Upper mount cover bolt
8 mm
23
2.3
16.5
Lower mount bolt/nut
12 mm
64
6.4
46.3
Clamp bracket shaft nut
7/8-14UNF
43
4.3
31.0
Tilt stopper arm bolt
10 mm
18
1.8
13.0
Shallow drive arm bolt
10 mm
18
1.8
13.0
Tiller handle cover bolt
8 mm
23
2.3
16.5
Water pump case nut
6 mm
11
1.1
8.0
Gearcase bolt
8 mm
23
2.3
16.6
Propeller shaft bearing housing bolt
6 mm
10
1.0
7.2
Pinion nut
8 mm
18
1.8
13.0
Propeller nut
14 mm
24.5
2.5
18.0