Yamaha YFM660RN Service Manual page 102

ADJUSTING THE REAR SHOCK ABSORBER
2.Adjust:
Rebound damping force
***********************************************
Adjustment steps:
Turn the adjusting screw 1 in direction a or
b.
Direction a
Direction b
From the fully turned-in position:
Standard: 10 clicks out
Minimum: 20 clicks out
Maximum: 3 clicks out
CAUTION:
Do not force the adjuster past the minimum
or maximum extent of adjustment. The
adjuster may be damaged.
***********************************************
3.Adjust:
Compression damping force
***********************************************
Adjustment steps:
Turn the adjusting screw 1 in direction a or
b.
Direction a
Direction b
From the fully turned-out position:
Standard: 7 clicks in
Minimum: 1 click in
Maximum: 12 clicks in
3 - 46
CHK
ADJ
Rebound damping force
is increased.
Rebound damping force
is decreased.
Compression damping
force is increased.
Compression damping
force is decreased.