2010 Yamaha Motorsports FX Nytro MTX SE 153 Owners Manual - Page 31

2010 Yamaha Motorsports FX Nytro MTX SE 153 Manual

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Control functions ESU13134 Adjusting the spring preload of the center shock absorber and the rear torsion springs (FX10M53) The spring preload can be adjusted by turning the adjusting nut on the center shock absorber and the adjusters on the rear torsion springs. Adjust the spring preload as follows. Center shock absorber 1. Loosen the locknut. 2. To increase the spring preload and thereby harden the suspension, turn the adjusting nut in direction (a). To decrease the spring preload and thereby soften the suspension, turn the adjusting nut in direction (b). 3. Spring preload setting*: Minimum (soft): 104.1 mm (4.10 in) Standard: 122.1 mm (4.81 in) Maximum (hard): 131.1 mm (5.16 in) * Distance A changes 1.5 mm (0.06 in) with each full turn of the adjusting nut. Tighten the locknut to the specified torque. NOTICE: Always tighten the locknut against the adjusting nut, and then tighten the locknut to the specified torque. [ECS00860] Tightening torque: Locknut: 42 Nm (4.2 m·kgf, 30 ft·lbf) Rear torsion springs EWS00750 1 2 (a) (b) 1. Spring preload adjusting nut 2. Distance A 3. Locknut 3 WARNING The left and right spring preloads must be adjusted to the same setting. Uneven settings can cause poor handling and loss of stability. To increase the spring preload and thereby harden the suspension, turn the adjuster in direction (a). To decrease the spring preload and thereby soften the suspension, turn the adjuster in direction (b). TIP The spring preload setting is determined by measuring distance A, shown in the illustration. The longer distance A is, the higher the spring preload; the shorter distance A is, the lower the spring preload. (a) 1 1. Spring preload adjuster (b) 25

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Control functions
25
ESU13134
Adjusting the spring preload of the
center shock absorber and the rear
torsion springs (FX10M53)
The spring preload can be adjusted by turning
the adjusting nut on the center shock absorb-
er and the adjusters on the rear torsion
springs. Adjust the spring preload as follows.
Center shock absorber
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.
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]
Rear torsion springs
WARNING
EWS00750
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).
1.
Spring preload adjusting nut
2.
Distance A
3. Locknut
(a)
(b)
2
1
3
Spring preload setting*:
Minimum (soft):
104.1 mm (4.10 in)
Standard:
122.1 mm (4.81 in)
Maximum (hard):
131.1 mm (5.16 in)
* Distance A changes 1.5 mm (0.06 in)
with each full turn of the adjusting nut.
Tightening torque:
Locknut:
42 Nm (4.2 m·kgf, 30 ft·lbf)
1.
Spring preload adjuster
(a)
(b)
1