Yamaha YZ85 2021 - Shock Absorber Adjustment

Instrument and control functions
4-11
4
EAU4133A
Adjusting the shock absorber
assembly
This shock absorber assembly is
equipped with a spring preload adjust-
ing nut, a rebound damping force ad-
justing screw and a compression
damping force adjusting screw.
NOTICE
ECA10102
To avoid damaging the mechanism,
do not attempt to turn beyond the
maximum or minimum settings.
Spring preload
Adjust the spring preload as follows.
1. Loosen the clamp bolts, and then
remove the air filter joint.
2. Loosen the locknut.
3. Turn the adjusting nut in direction
(a) to increase the spring preload.
Turn the adjusting nut in direction
(b) to decrease the spring preload.
 A special wrench can be ob-
tained at a Yamaha dealer to
make this adjustment.
 The spring preload setting is
determined by measuring
distance A, shown in the illus-
tration. The longer distance A
is, the lower the spring pre-
load; the shorter distance A
is, the higher the spring pre-
load. With each complete
turn of the adjusting nut, dis-
tance A is changed by 1.5
mm (0.06 in).
1. Clamp bolt
2. Air filter joint
1. Clamp bolt
11
22
111
1. Locknut
2. Spring preload adjusting nut
1 21
(a)(a)
(b)(b)
(a)
(b)
2
UB4B13E0.book Page 11 Wednesday, August 25, 2021 7:15 AM