Chapter 3 – Maintenance
Service manual AJP PR3/PR4 3 - 21
With a 13mm wrench adjust the adjuster
screws (3) both sides equally until you obtain
the correct clearance.
! WARNING !
Ensure that both tuners are in the same
position. If not the chain will misaligned with
the sprocket which can lead to excessive
wear and make up chain jump off sprocket.
Tighten the tuners fixing nuts.
Tightening torque: 10N.m (1,0Kgf.m)
Tighten the nut of the rear axle.
Tightening torque: 93N.m (9,5kgf.m)
Recheck the clearance in the chain and the
free rotation of the rear wheel.
! WARNING !
Press several times the rear brake pedal and
check that the brake is actuating. Always
perform this operation to ensure that the rear
brake is operational.
When the chain is too dirty, it should be
removed and cleaned before being
lubricated.
Removal
Remove the pinion cover (1);
Remove the chain retaining clip (1) carefully;
Remove the fixing link;
Remove the chain.
! WARNING !
Be careful not to lose the O-rings when the
clip and the retaining link are removed.
Wash the chain with a flammable solvent or
with a high flash point (eg. kerosene) to not
damage the O-rings;
Clean until it dries;
! WARNING !
Do not use steam cleaning or water jet with
pressure because the O-rings will be
damaged.
Inspect the chain and O-rings to locate wear
or damage. Replace the chain if it is with high
wear or damaged.
Measure the chain length by putting it on a
flat surface and fully extended so that the
links be aligned.