Yamaha PZ50RTZ Owner's Manual page 35

PZ50MT
(b)
(a)
1. Spring preload adjusting ring
Spring preload setting:
Minimum (soft):
1
Standard:
PZ50GT / PZ50VT 1
PZ50MT 3
Maximum (hard):
5
Center shock absorber (PZ50RT)
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).
(b)
1. Spring preload adjusting nut
2. Distance A
3. Locknut
1
3
2
(a)
Control functions
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.
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.
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).
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