- Split the crankcases while keeping the crankshaft
inserted on the flywheel side half-crankcase.
- Remove the coupling gasket.
N.B.
THE BUSHING SUPPORT CAN BE LEFT IN THE
FLYWHEEL SIDE HALF-CRANKCASE.
Removing the crankshaft
- Before removing the crankshaft, check the timing
with the countershaft. To carry out this check, turn
the crankshaft to align the two holes obtained on
the crankshaft with the hole on the countershaft
control gear.
This is an optimal position also to remove the
crankshaft.
- Remove the crankshaft with the shim adjustment
washer on the flywheel side.
CAUTION
WHILE OPENING THE CRANKCASE AND RE-
MOVING THE CRANKSHAFT, CHECK THAT
THE SHAFT THREADED ENDS DO NOT INTER-
FERE WITH THE MAIN BEARINGS. FAILURE
TO OBSERVE THIS PRECAUTION CAN DAM-
AGE THE MAIN BEARING.
Removing the oil pump and countershaft con-
trol gear.
- To remove the control gear, loosen the 4 fasten-
ing screws.
Remove the gear only if actually required.
CAUTION
THE SCREWS HAVE A COUNTERSUNK HEAD
AND THEIR THREADING IS LOCKED BY LOC-
TITE. BE CAREFUL NOT TO DAMAGE THE
CONTROL HEXAGON. TO OBTAIN BETTER
RESULTS IT IS PREFERABLE TO USE AN IN-
SIDE HEXAGON SOCKET WRENCH.
Engine MP3 400 i.e.
ENG - 80
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