Yamaha F150B - Special Tightening Torque; Power Unit

1-18
Special tightening torque
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A
Special tightening torque
Fuel system
Power unit
Part to be tightened Thread size
Tightening torques
N·m kgf·m ft·lb
Canister bracket bolt M6 10 1.0 7.4
Fuel pump cover screw M6 4 0.4 3.0
Fuel pump assembly bolt M6 10 1.0 7.4
Filter cup — 5 0.5 3.7
Intake silencer bolt M6 6 0.6 4.4
Throttle body bolt M8 13 1.3 9.6
Fuel rail bolt M8 13 1.3 9.6
Fuel cooler bolt M6 5 0.5 3.7
Air pressure sensor screw M5 5 0.5 3.7
Vapor separator bolt M6 5 0.5 3.7
Pressure regulator screw M6 5 0.5 3.7
Float chamber cover screw M4 2 0.2 1.5
Float chamber cover inner plate screw M4 2 0.2 1.5
Needle valve assembly screw M4 2 0.2 1.5
Vapor separator drain screw — 2 0.2 1.5
Part to be tightened Thread size
Tightening torques
N·m kgf·m ft·lb
Spark plug — 25 2.5 18.4
Power unit mounting bolt
M8 20 2.0 14.8
M10 42 4.2 31.0
Upper case cover bolt M6 4 0.4 3.0
PTT motor lead bolt M6 4 0.4 3.0
Flywheel magnet nut — 270 27.0 199.1
Ignition coil bolt M6 7 0.7 5.2
Starter relay lead bolt M6 4 0.4 3.0
Starter motor bolt M8 29 2.9 21.4
Starter motor terminal nut — 9 0.9 6.6
Timing belt tensioner bolt — 39 3.9 28.8
Cylinder head cover plate screw M4 2 0.2 1.5
Drive sprocket bolt M5 7 0.7 5.2
Driven sprocket bolt M10 60 6.0 44.3
Camshaft cap bolt
1st
M7
8 0.8 5.9
2nd 17 1.7 12.5
Cylinder head bolt
1st
M8
14 1.4 1.3
2nd 28 2.8 20.7
1st
M10
19 1.9 14.0
2nd 37 3.7 27.3
3rd 90°
Bracket unit technical data / Special tightening torque