Note
For clarity, the figures show the engine removed from the frame.
Loosen and remove the water pump cover (12) fixing screws (13) to the generator cover (16).
Remove the water pump cover (12).
Clean the pump housing of any scale. Check the bearings wear by turning the impeller shaft (10); in case of excessive clearance, it is necessary to replace them by operating as follows.
Remove the circlip (3) on the impeller shaft.
Slide off the rotor (10) with the sealing ring (9) from the outside.
Recover the ceramic washer - seal unit (8) placed on the internal side.
Undo and remove the screws (1) with the washer (2).
Working from the generator cover (16) internal side, use a suitable punch to press on the inner race of end bearing (5) until it can be extracted from the cover.
Use the same technique to remove the other bearing (6).
Remove the inner spacer (7).
Check the condition of the components of the mechanical seal: there should be no signs of deformation, cracking, or excessive wear. In the case of damage, both components must be renewed.
External components
Oil breather valve
O-ring
Sealing washer
Gear position sensor
Cylinder barrel/head stud
Nipple
By-pass spring
Plug
Plug
Aluminium gasket
Nut
Lock washer
Timing gear pair
Key
Key
O-ring
Screw
Locating dowel
Starter idler gear
Washer
Gear shaft
O-ring
...
Removing the timing belt driveshaft pulleys
Use the tool code 88713.1805 To hold the driving pulley on the engine
crankcase against rotation.
Important
If this operation is carried out with the engine installed in the frame,
hold the driveshaft pulleys against rotation using the
tool code 88713.2011 Mounted on the alternator cover.
Lo ...
Checking valve clearances
To check the valves clearance, it is necessary to have access to the cylinder
head covers and then remove the
components listed below.
Unscrew the two fixing screws (1) of the cover (2) according to the
crankshaft.
Fit the tool handgrip 88713.0123 In the holes of the generator cover t ...