Tightening Torques - Yamaha F20A Service Manual

SPEC

TIGHTENING TORQUES

Part to be tightened
POWER UNIT
Power unit mounting
Recoil starter roller
Sheave drum
Flywheel magneto
Carburetor
Oil filter cartridge
Oil filter cartridge bolt
Spark plug
Drive pulley
Driven pulley
Cylinder head
Cylinder head cover
Rocker arm shaft
Tappet adjusting screw
Exhaust cover
Crankcase
Connecting rod
Balancer piston
Oil pump cover
LOWER
Propeller
Lower unit mounting
Propeller shaft housing
Pinion nut
Water inlet
BRACKET
Tiller handle mounting
Tiller handle pivot
Steering bracket adjusting bolt
Upper rubber mount
Rubber mount housing
Upper damper
Lower mount housing
Clamp bracket - upper (manual tilt)
TIGHTENING TORQUES
1st
2nd
1st
2nd
1st
2nd
1st
2nd
1st
2nd
1st
2nd
Thread size
Nm
M8 21.0
M6 8.0
M6 15.0
M20 157.0
M6 8.0
— 17.5
— 40.0
M12 17.2
M35 140.0
M10 38.0
22.6
M9
46.1
6.0
M6
11.8
M8 18.0
M6 13.5
6.0
M6
12.0
6.0
M6
12.0
15.0
M8
30.0
6.0
M6
16.5
M20 157.0
— 4.4
M16 34.4
M10 36.8
M8 11.1
M12 49.5
M6 4.4
M10 37.0
M8 12.7
M8 4.0
M8 23.6
M8 17.7
M8 18.0
M10 53.9
M22 13.0
2-10
Tightening torque
m • kg ft • lb
2.1 15.5
0.8 5.9
1.5 11.1
16.0 115.8
0.8 5.9
1.8 12.9
4.1 29.5
1.7 12.6
14.3 103.3
3.9 28.0
2.3 16.7
4.7 34.0
0.6 4.4
1.2 8.7
1.8 13.3
1.4 10.0
0.6 4.4
1.2 8.9
0.6 4.4
0.6 8.9
1.5 11.1
3.1 22.1
0.6 4.4
1.7 12.2
16.0 115.8
0.4 3.2
3.5 25.3
3.8 27.1
1.1 8.1
5.0 36.5
0.4 3.2
3.8 27.3
1.3 9.4
0.4 2.9
2.4 17.4
1.8 13.0
1.8 13.0
5.5 39.8
1.3 9.4
E