Yamaha Phazer PZ50Y Owner's Manual page 36

Control functions
To increase the spring preload and thereby
harden the suspension, turn the adjusting ring
in direction (a). To decrease the spring pre-
load and thereby soften the suspension, turn
the adjusting ring in direction (b).
Spring preload setting:
Minimum (soft):
1
Standard:
PZ50 / PZ50GT / PZ50VT 1
PZ50MT 3
Maximum (hard):
5
Center shock absorber (PZ50RT)
(b)
1. Spring preload adjusting nut
2. Distance A
3. Locknut
1. Loosen the locknut.
2. To increase the spring preload and there-
by harden the suspension, turn the ad-
justing nut in direction (a). To decrease
the spring preload and thereby soften the
suspension, turn the adjusting nut in di-
rection (b).
TIP
The spring preload setting is determined by
measuring distance A, shown in the illustra-
tion. The longer distance A is, the higher the
spring preload; the shorter distance A is, the
lower the spring preload.
30
1
3
2
(a)
Spring preload setting*:
Minimum (soft):
112.5 mm (4.43 in)
Standard:
113.5 mm (4.47 in)
Maximum (hard):
123.5 mm (4.86 in)
* Distance A changes 1.5 mm (0.06 in)
with each full turn of the adjusting nut.
3. Tighten the locknut to the specified
torque. NOTICE: Always tighten the
locknut against the adjusting nut, and
then tighten the locknut to the speci-
fied torque.
[ECS00860]
Tightening torque:
Locknut:
42 Nm (4.2 m·kgf, 30 ft·lbf)
Rear torsion springs
EWS00750
WARNING
The left and right spring preloads must be
adjusted to the same setting. Uneven set-
tings can cause poor handling and loss of
stability.
(a)
1. Spring preload adjuster
To increase the spring preload and thereby
harden the suspension, turn the adjuster in di-
rection (a). To decrease the spring preload
and thereby soften the suspension, turn the
adjuster in direction (b).
(b)