Yamaha F150A, Service Manual

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Specified tightening torque
Specified tightening torque
Specified tightening torques are provided for specific nuts, bolts, and screws. When tightening these
fasteners, follow the tightening torque specifications indicated throughout the manual to meet the
design aims of the outboard motor.
Rigging information
Electrical system
Fuel system
Part to be tightened Screw size
Tightening torques
N·m kgf·m ft·lb
Shift cable locknut — 5 0.5 3.7
Throttle cable locknut — 5 0.5 3.7
Water pressure sensor adapter — 23 2.3 17.0
Water pressure sensor — 18 1.8 13.3
Speed sensor — 18 1.8 13.3
Battery cable nut — 9 0.9 6.6
Clamp screw M5 2 0.2 1.5
Receiver screw M4 4 0.4 3.0
Part to be tightened Screw size
Tightening torques
N·m kgf·m ft·lb
Control unit screw M6 4 0.4 3.0
Buzzer screw ø6 2 0.2 1.5
Transmitter screw ø2 0.1 0.01 0.1
Part to be tightened Screw size
Tightening torques
N·m kgf·m ft·lb
Fuel cup assembly — 5 0.5 3.7
Fuel pump screw M6 4 0.4 3.0
Fuel pump bolt M6 10 1.0 7.4
Intake silencer bolt M6 6 0.6 4.4
Throttle body assembly 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 drain screw — 2 0.2 1.5
Vapor separator bolt M6 5 0.5 3.7
Float chamber plate screw M4 2 0.2 1.5
Needle valve screw M4 2 0.2 1.5
Float chamber cover screw M4 2 0.2 1.5
Pressure regulator screw M6 5 0.5 3.7