Husqvarna CR 65 2012 Workshop Manual page 174

Workshop Manual Ed. 09-2011
CHASSIS AND WHEELS
CR 65 2012
Checking sprocket wear
Check the transmission sprocket for damage or wear. When worn down like the
sprocket shown in the figure, it must be replaced.
Wheel misalignment causes abnormal wear, making the motorcycle
unsafe to ride.
Dirt caked on sprockets and chain collected while riding on muddy
or wet terrain increases chain tension. If you expect to ride on
muddy or wet terrain, slacken the chain a bit. Riding on muddy
terrain significantly increases chain and sprocket wear.
Y.12