5
Oil circuit
Oil pump 3 sucks the engine oil from the gearbox oil sump
through long oil unit 4. The oil flows through oil line 5 into the
cylinder head to camshaft lubrication point 6. The oil quantity is
adjusted by means of oilway screw 7. A pipe branches off to long
oil unit 8, where the coarser particles are filtered from the oil.
The oil then comes to short oil unit 9, which filters off the finer
particles. Once it has been so cleaned, the engine oil is pumped
through bypass valve 10 to connecting rod bearing 11 and then
sprayed from below onto the piston through jet 12. The second
oil pump 13 sucks the oil from the crankcase through short oil
unit 14, lubricating gears 15.
Checking the engine oil level
The engine oil level can be checked indifferently when the en-
gine is cold or hot.
Place the vehicle in an upright position on level ground (do not
use the side stand).
When the engine is cold, the oil should reach the lower edge of
sight A.
When the engine is hot, the oil should reach the upper edge of
the sight.
If necessary top up with engine oil.
WARNING: An insufficient quantity of engine oil or the
use low quality oil lead to early engine wear.
Changing the engine oil and the oil filter
Before performing this operation, remove (if present) lower
bumper A after unscrewing the three screws B as shown in the
figure.
Whenever the oil is changed, be sure to clean the short and long
oil units and replace both oil filters.
Renew the oil while the engine is at operating temperature.
WARNING: An engine at operating temperature and the
oil it contains are very hot and can cause burns.
Park the vehicle on level ground, remove screw C and drain the
oil into a container.
Thoroughly clean the screw (with the magnet). When the oil has
drained out completely, clean the sealing surface, refit screw C
with the seal ring and tighten to 20 N·m.
ENVIRONMENT: Dispose of spent oils in compliance
with applicable laws.
4 - Maintenance Release 01 Date 0/2007
A
B
B
C
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