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.

When the screw (29) is tightened, the cable guide (28) with the spaces (30) is released.

To remove the camshaft pulleys, install the tool 88713.3152 on the pulley to be removed to prevent its rotation, and using service socket no. 88700.5644 inserted in a torque wrench or ratchet arm, loosen the pulley retaining nut (13).

Use the wrench of tool no. 88700.5644 to lock rotation of the timing belt driveshaft pulley on the crankcase and, using the socket combined with the tool, loosen the ring nut (6).

Remove the spacer (5) and the circlip (25).

To disassemble pulley parts, loosen and remove the three screws (12), slide out washer (15) and remove pulley (16) from flange (17).

Install the washer (15) up against the pulley, aligning the timing notch (I) with the timing mark (G) on the pulley and the one (H) on the hub.

During reassembly, take care that the timing mark “B” on the spacer flange is aligned with the mark “A” on the pulley and washer.

Insert tool no. 88713.3152 in the belt pulleys to prevent their rotation.

Using the socket of service tool no.88700.5644 in combination with a torque wrench, tighten the nuts (13) to a torque of 71 Nm (Min. 64 Nm - Max. 78 Nm) (Sect. 3 - 3,Engine torque settings).

Install the circlip (25) on the pulley side of the timing belt driveshaft. Drive it into its seat using the protective cap 88700.5749 and the relative drift.

To prevent the nuts working loose and consequent serious engine damage, always use new self-locking nuts on all the timing belt pulleys on reassembly.

Use the wrench of tool 88700.5644 to restrain the pulleys against rotation and, using the bush of the tool in a torque wrench, tighten the self-locking nut to a torque of 71 Nm (Min. 64 Nm - Max. 78 Nm) (Sect. 3 - 3, Engine torque settings).

If it was disassembled, apply the recommended threadlocker to the fixed tensioner (11) and tighten it to a torque of 20 Nm (Min. 18 Nm - Max. 22 Nm) (Sect. 3 - 3, Engine torque settings).

Position the crankshaft so that the piston of the horizontal cylinder is at TDC of its power stroke. This is achieved by aligning the timing mark (P) on the timing belt driveshaft pulley (8) with the reference notch (Q) on the clutch cover.

Install the service tool 88713.2011 in the generator cover to hold the crankshaft against rotation and secure it with the relative pin.

Restrain the camshafts of both cylinder heads by screwing tool no. 88713.2282 into the side covers.

Locate the tensioner pulleys (21) on the vertical and horizontal cylinders. Screw without tightening to the specified torque screw (27) and screw (20) so that the tensioners can turn.

Check the timing belt tension and adjust if necessary as described in the paragraph “Measuring timing belt tension“ (Sect. 6 - 13).

When the correct belt tensioning value is reached, ensure that screws (20), (27) and (12) are tightened to a torque of 10 Nm (Min. 9 Nm - Max. 11 Nm) (Sect. 3 - 3,Engine torque settings).

Whenever you renew any components of the timing system, it is good practice to also check the timing (Sect. 9 - 4.1, Cylinder head assemblies: checks and adjustments).

Remove the side covers (E) of the tool part no. 88713.2282 and refit the screws (F), with the recommended threadlocker, with corresponding washer, tightening it to a torque of 3 Nm (Min. 2 Nm - Max. 3 Nm) (Sect. 3 - 3, Engine torque settings).

Remove the crankshaft locking tool 88713.2011 unscrewing first the pin and then the screw from the tool.

Tighten the screws to a torque of 5 Nm (Min. 4.5 Nm - Max. 5.5 Nm) (Sect. 3 - 3, Engine torque settings).

Set the cable guide (28) with the spacer (30) on the cover (2) by starting the screw (29) on its thread.

Tighten the screw (4), the screws (3) and (29) to a torque of 10 Nm (Min. 9 Nm - Max. 11 Nm) (Sect. 3 - 3, Engine torque settings).