Chapter 3 – Maintenance
Service manual AJP PR3/PR4 3 - 22
CHAIN LENGTH:
SUPERMOTO: 428H – 110 links
ENDURO: 428H – 112 links
EXTREME: 520 – 114 links
Lubricate the chain with specific spray for
drive chains, which do not damage the O-
rings.
Pinion
Examine if the teeth of the pinion have
excessive wear or damage:
(1) Wear; (2) Normal; (3) Damaged
Replace if necessary.
Note:
Never install a new drive chain with a
used sprocket and pinion or new pinion and
sprocket with a used drive chain. Both the
drive chain as the sprocket and pinion should
be in good condition, otherwise the new parts
will wear out quickly.
Assembly
Install a new drive chain;
Place the fixing link and the retaining clip
always facing the rotational direction of the
chain and wheel;
Install the pinion cover;
Adjust the clearance of the drive chain.
! DANGER !
Do not install the drive chain in without the
four O-rings of the fixing link.
Check that there is no clearance between the
fixing link and the retaining clip.
Note:
Assemble the retaining clip on the
fixing link always facing the direction of the
chain rotation.
DRIVE CHAIN GUIDE
Check the chain guide (1) condition. If it is too
worn or damaged it must be replaced.
Also check the tightness in the chain guide
fixing screws on the swing arm.
Models with chain pitch 520, also check the
attachment of the support in the chain guide
and swing arm.