Husqvarna TE 250 Workshop Manual page 461

FRAME AND WHEELS
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.
Check the pinion damages or wear and replace it should the wear degree be as the
one shown in figure.
: Misalignment of the wheel will result in abnormal wear and may result in an
unsafe riding condition.
: 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.
Part. N. 8000 B0148 (02-2008) Y.15