Husqvarna WR 250/2005, Workshop Manual

Page: 103 / 368

REGISTRAZIONI E REGOLAZIONI
SETTINGS AND ADJUSTMENTS
REGLAGES ET CALAGES
EINSTELLUNG UND EINREGULIERUNGEN
AJUSTES Y REGULACIONES
N° 8000A4433 (06-04)
D.41
LUBRICATING THE CHAIN WITH OR
Lubricate all metallic and rubber (OR) elements using a brush, and use engine oil with
SAE 80-90 viscosity for the internal and external parts.
5 - If the chain has been cut, reassemble using a joint.
6 -Assemble the joint spring by turning the closed side to the chain direction of rotation
as shown in figure.
NOTE * : Even if all the joints are reusable when in good conditions, for safety purpo-
ses we advise using new joints when reassembling the chain.
6 -Accurately adjust the chain as described on page D.40
WARNING: The chain oil has NEVER to get in contact with the tires or the rear brake
disk.
CHAIN TENSION ROLLERS, CHAIN DRIVING ROLLER,
CHAIN GUIDE, CHAIN RUNNER
Check the wear of the above mentioned elements and replace them when necessary.
WARNING * : Check the chain guide alignement, and remember that a bent element
can cause a rapid wear of the chain. In this case, a chain fleeting from the sprocket may
ensue.
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 between 1st pin center and 21st pin center.
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 figure shows the
outline of teeth in normal and excessive 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
1- Chain tension roller
2- Chain driving roller
3- Chain guide
4- Chain slider
2
1
3
STANDARD
WEAR
LIMIT
317,5 mm 323 mm
D2-250-2005 22-06-2004 17:22 Pagina D.41