Husqvarna WR 250 2012 Caracteristicas - Uso - Mantenimiento página 92

CHECKING THE WEAR OF CHAIN, PINION AND
SPROCKET
Proceed as follows:
- fully stretch the chain with the adjusting screws.
- mark 20 chain links.
- measure the distance "A" between 1st pin center and 21 st
pin center.
WEAR
STANDARD
LIMIT
317,5 mm 323 mm
12,5 in. 12,72 in.
EN - 34
MUM2_WR250-300_2012_GB.indd 34
Check the pinion damages or wear and replace it should the
wear degree be as the one shown in figure.
Remove the wheel and check the wear of the rear sproket teeth.
The below figure shows the outline of teeth in normal and exces-
sive wear. Should the sprocket be badly worn out, replace it by
loosening the six fastening screws to the hub.
WARNING*: Misalignment of the wheel will
result in abnormal wear and may result in
an unsafe riding condition.
Note*: In muddy and wet conditions, mud
sticks to the chain and sprockets resulting
in an overtight chain. The pinion, the chain,
and the rear sprocket wheel wear increases
when running on muddy ground.
Normal consumption
Excessive consumption
LUBRICATING THE CHAIN
Lubricate the chain following these instructions.
WARNING * : Never use grease to lubricate
the chain. Grease helps to accumulate dust
and mud, which act as abrasive and hepl to
rapidly wear out the chain, the sprocket, and
the crown.
Disassembling and cleaning
When particularly dirty, remove and clean the chain before
lubrication.
Work as follows:
1 - Set a stand or a block under the engine and see that the rear
wheel is lifted from the ground.
Remove: screws (1), transmission sprocket guard (2), clip
(3), master link (4) and transmission chain (5);
To reassemble, reverse the above procedure.
9-05-2011 18:02:55