Chapter 4 – Lubrication
Service manual AJP PR3/PR4 4 - 5
For 200 / 240cm3 engines with oil cooler,
the cover may be resting besides front
wheel avoiding remove the oil pipe;
Remove the circlip and remove the nylon
sprocket in the oil pump.
For some 240cm3 engines you must first
remove the cover over the steel sprocket;
Remove the three screws on the
centrifugal impeller cover. Care should be
taken not to break the rotor if it has to use
an impact wrench to loosen these screws
on the rotor cover;
Then remove the centrifugal impeller using
two special tools to loosen the crankshaft,
one to lock the crankshaft and the other to
fit the special nut;
Finally remove the centrifugal impeller and
clean all possible burrs and dirt that exist in
their walls.
