Yamaha YZ426F(M)/LC Owner's Service Manual page 210

FRONT FORK OIL SEAL AND DUST SEAL CLEANING/
FRONT FORK REBOUND DAMPING FORCE ADJUSTMENT
EC36D001
FRONT FORK OIL SEAL AND DUST SEAL
CLEANING
1. Remove:
Protector
Dust seal 1
NOTE:
Use a thin screw driver, and be careful not to
damage the inner fork tube and dust seal.
2. Clean:
Dust seal a
Oil seal b
NOTE:
Clean the dust seal and oil seal after every
run.
Apply the lithium soap base grease on the
inner tube.
EC36H002
FRONT FORK REBOUND DAMPING FORCE
ADJUSTMENT
1. Adjust:
Rebound damping force
By turning the adjuster 1.
Stiffer a →
Softer b → Decrease the rebound damp-
Extent of adjustment
Maximum
Fully turned in
position
STANDARD POSITION:
This is the position which is back by the spe-
cific number of clicks from the fully turned-in
position.
Standard position:
9 clicks out
3 - 34
INSP
ADJ
Increase the rebound damp-
ing force. (Turn the adjuster
1 in.)
ing force. (Turn the adjuster
1 out.)
Minimum
20 clicks out (from
maximum posi-
tion)