Bold reference numbers in this section identify parts not shown in the figures alongside the text, but which can be found in the exploded view diagram.

The throttle position sensor (2) is installed on the right-hand side of the throttle body, in the position of the vertical cylinder (MASTER) throttle. Undo the two bolts (5) to remove the throttle position sensor from the throttle body.

Unscrew the bolts (6) to remove the injectors from the throttle body, recovering the washers (4).

Locate the washers (4) and tighten the bolts (6).

The stepper motor (13) is installed in the central part of the throttle body: to remove it, unscrew the bolts (14) and disconnect the hoses (G) from the throttle body. Refer to Section M 3, Stepper motor for details of stepper motor operation.

If the hoses (12) were removed, reconnect them to the throttle body with the clamps (3), positioning the hoses and clamps as shown in the figure.

The air temperature sensor (19) is installed on the intake manifold of the vertical cylinder (12); to refit, refer to Section M 3, Air pressure sensor.

The hose which mounts the air temperature sensor (19) should be installed on the same side of the throttle body as the position sensor (2).

Tighten the clamps to the specified torque (Sect. C 3, Frame torque settings).

Orient the throttle body (11) with the pulley (P) facing the right-hand side (relative to the direction of travel) and insert it fully home in the intake manifolds.

Tighten the clamps (3) to the specified torque (Sect. C 3, Frame torque settings), making sure that they do not protrude beyond the locating edges of the manifolds.

Connect the wiring connector (F) of the air pressure sensor to the main wiring harness and locate the air pressure sensor (25) on the throttle body.

In the case of throttle body renewal, carry out the operation “Self-learning throttle position sensor (TPS)” as indicated in Section D 5.