Yamaha F100A - Tightening Torques

2-10
SPEC
E
TIGHTENING TORQUES
TIGHTENING TORQUES
Part to be tightened Thread size
Tightening torques
Nm m • kg ft • lb
POWER UNIT
Breather cover bolt M4 2 0.2 1.4
Camshaft cap bolt
1st
M7
8 0.8 5.8
2nd 17 1.7 12
Camshaft pulley bolt M10 60 6.0 43
Connecting rod bolt
1st
M8
8 0.8 5.8
2nd Turn 90
°
Crankcase bolt
1st
M8
14 1.4 10
2nd 28 2.8 20
Crankcase journal bolt
1st
M10
(1.5 mm pitch)
19 1.9 14
2nd Turn 60
°
(*1)
Drive sprocket nut M40 265 27 192
Cylinder head
1st
M8
14 1.4 10
2nd 28 2.8 20
Cylinder head bolt
1st
M10
(1.5 mm pitch)
15 1.5 11
2nd 33 3.3 24
3rd Turn 90
°
(*2)
Cylinder head cover bolt M6 8 0.8 5.8
Outer exhaust cover bolt
1st
M6
6 0.6 4.3
2nd 12 1.2 8.7
Flywheel magneto nut M24 190 19 137
Fuel pump bracket bolt M7 17 1.7 12
Oil filter — 18 1.8 13
Oil filter plug (cylinder block) M20 50 5.0 36
Spark plug M14 25 2.5 18
Spark plug cap cover hexagon bolt M6 4 0.4 2.9
Throttle link ball joint — 4 0.4 2.9
Timing belt tensioner bolt M10 40 4.0 29
Timing plate screw M6 4 0.4 2.9
LOWER UNIT
Cooling water inlet screw — 5 0.5 3.6
Lower unit mounting bolt/nut M10 40 4.0 29
Pinion gear nut M16 95 9.5 68
Propeller nut M16 35 3.5 25
Ring nut M101.5 100 10 72
BRACKET
Apron mounting screw — 4 0.4 2.9
Exhaust guide mounting bolt M8 20 2.0 14
Exhaust manifold mounting bolt M6 10 1.0 7.2
Grease nipple — 3 0.3 2.2
Lower rubber mounting nut M12 52 5.2 38
Oil drain bolt M14 27 2.7 20