Yamaha TT-R250 Owner's Manual page 27

INSTRUMENT AND CONTROL FUNCTIONS
2. To increase the spring preload and
thereby harden the suspension,
turn the adjusting nut in direction
(a). To decrease the spring pre-
1
load and thereby soften the sus-
pension, turn the adjusting nut in
2
direction (b).
NOTE:
3
G
A special wrench is needed to
make this adjustment and it can be
4 obtained at a Yamaha dealer.
G
The spring preload setting is deter-
mined by measuring distance A,
5
shown in the illustration. The short-
er the distance A is, the higher the
6
spring preload; the longer distance
A is, the lower the spring preload.
7
Spring preload:
8
Minimum (soft):
Distance A = 236 mm (9.3 in)
Standard:
9
Distance A = 228 mm (9.0 in)
Maximum (hard):
Distance A = 224 mm (8.8 in)
3. Tighten the locknut to the specified
torque.
Tightening torque:
Locknut:
70 Nm (7.0 m·kgf, 51 ft·lbf)
CAUTION:
Always tighten the locknut against
the adjusting nut, and then tighten
the locknut to the specified torque.
Rebound damping force
1
(b)
(a)
1. Rebound damping force adjusting dial
To increase the rebound damping force
and thereby harden the rebound damp-
ing, turn the adjusting dial in direction
(a). To decrease the rebound damping
force and thereby soften the rebound
damping, turn the adjusting dial in di-
3-10
rection (b).
Rebound damping setting:
Minimum (soft):
16 clicks in direction (b)*
ECA11240
Standard:
8 clicks in direction (b)*
Maximum (hard):
1 click in direction (b)*
* With the adjusting dial fully turned in
direction (a)
Compression damping force
(b)
1. Compression damping force adjusting
knob
To increase the compression damping
force and thereby harden the compres-
sion damping, turn the adjusting knob
in direction (a). To decrease the com-
pression damping force and thereby
1
(a)