69
Lubricating system
6
Dismantling, mod. 625/630/670
Dismantle the clutch cover and centrifu-
gal clutch.Remove the screws.
Remove the plate from the bar attach-
ment.
Stick a screw driver in each recess and
bend the oil pump.
Lift the oil suction hose out of the oil tank
and clean the oil pick-up filter.
Check if there is dirt in the suction channel
(A) by rotating the pump shaft in both
directions. When the pump works properly
and is filled with oil, the oil goes alternately
through the suction channel and the com-
pression channel (B).
If necessary blow clean the passages
with compressed air.
NOTE!
Do not blow off the seal at the inlet to the
pressure passage.
For cleaning, dismantle the pump as
follows:
1. Remove clip (A), washer (B), spring
(C) and plastic washer (D).
2. Remove adjusting screw (E).
3. Remove locking screw (F) which
retains the pump drive on the pump
piston.
A
B
Dismantling, mod. 625/630/670
Bend up the oil pump from the crankcase
by means of screwdriver.
Dismantle the oil hose and clean the filter.
Check that the pick-up and pressure
passages are open. Blow clean the passa-
ges with compressed air.
Dismantle the oil pump.
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