Yamaha 2009 YFM25RY, Service Manual, Page: 93 / 293

CHASSIS
3-28
TIP
Be sure to remove all dirt and mud from
around the locknut and adjusting nut before
adjustment.
d. Tighten the locknut.
TIP
Always tighten the locknut against the adjust-
ing nut, then torque it to specification.
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EAS4D3F032
ADJUSTING THE REAR SHOCK
ABSORBER ASSEMBLY (for 4D3H, 4D3M)
Spring preload
ECA4D3F011
Never attempt to turn the adjusting ring
beyond the maximum or minimum setting.
1. Adjust:
• Spring preload
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a. Elevate the rear wheels by placing a suit-
able stand under the frame.
b. Loosen the locknut “1”.
c. Turn the adjusting ring “2” in direction “a” or
“b”.
TIP
Be sure to remove all dirt and mud from
around the locknut and adjusting ring before
adjustment.
d. Tighten the locknut.
TIP
Always tighten the locknut against the adjust-
ing ring, then torque it to specification.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
Rebound damping
ECA4D3F008
Do not force the adjuster past the minimum
or maximum extent of adjustment. The
adjuster may be damaged.
1. Adjust:
• Rebound damping
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a. Turn the adjuster “1” in direction “a” or “b”.
Rear shock absorber locknut
42 Nm (4.2 m·kg, 31 ft·lb)
Direction “a”
Spring preload is increased (suspension
is harder).
Direction “b”
Spring preload is decreased (suspension
is softer).
Spring preload adjusting length
“c”
Minimum
232.0 mm (9.13 in)
Standard
228.0 mm (8.98 in)
Maximum
220.0 mm (8.66 in)
Rear shock absorber locknut
42 Nm (4.2 m·kg, 31 ft·lb)
Direction “a”
Rebound damping is increased
(suspension is harder).
Direction “b”
Rebound damping is decreased
(suspension is softer).