YAMAHA YXZ1000R 2021 Repair Manual

5-30
5
TIPThe spring preload setting is determined by
measuring distance A, shown in the illustra-
tion. The shorter distance A is, the higher the
spring preload; the longer distance A is, the
lower the spring preload.
4. Tighten the locknut to the specifiedtorque. NOTICE: Always tighten the
locknut against the adjusting nut, and
then tighten it to the specified torque.
[ECB00082]
Spring preload setting: Minimum (soft):Distance A =
496.6 mm (19.55 in)
Standard: Distance A =
483.9 mm (19.05 in)
Maximum (hard): Distance A =
471.2 mm (18.55 in)
1. Distance ATightening torque: Locknut:41 N·m (4.1 kgf·m, 30 lb·ft)
1
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Crossover setting
The crossover setting adjusts the timing when
the shock absorber transitions from the soft
spring to the hard spring.TIPIt is recommended to adjust the crossover
setting a similar distance whenever the
spring preload is adjusted.
 The crossover setting is measured from the
bottom of the spring retainer to the top of
the crossover locknut.
1. Loosen the crossover locknut as shown.1. Distance B
2. Spring retainer
3. Crossover locknut
4. Crossover adjusting nut
3
4 12
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2. Turn the crossover adjusting nut in direc-tion (a) to increase the crossover setting
and in direction (b) to decrease the cross-
over setting.1. Special tool
2. 3/8 inch (9.5 mm) drive wrench
3. Crossover locknut
12
3
90˚
1. Distance B
2. Spring retainer
3. Crossover locknut
4. Crossover adjusting nutCrossover setting:Minimum (soft):Distance B = 19.2 mm (0.76 in)
Standard (recommended): Distance B = 26.8 mm (1.06 in)
Maximum (hard): Distance B = 39.5 mm (1.56 in)
3
4 12
(b)
(a)
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5
3. Tighten the locknut to the specifiedtorque. NOTICE: Always tighten the
locknut against the adjusting nut, and
then tighten it to the specified torque.
[ECB00082]
Rebound damping force
Turn the rebound damping force adjusting
screw in direction (a) to increase the rebound
damping force and thereby harden the damp-
ing, and in direction (b) to decrease the re-
bound damping force and thereby soften the
damping.
Tightening torque: Locknut:41 N·m (4.1 kgf·m, 30 lb·ft)1. Special tool
2. Torque wrench
3. Crossover locknut
21
3
90˚
1. Rebound damping force adjusting screw
1
(a)(b)
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Compression damping force
High speed compression damping forceTo increase the compression damping force
and thereby harden the high speed compres-
sion damping, turn the compression damping
force adjusting bolt in direction (a). To de-
crease the compression damping force and
thereby soften the high speed compression
damping, turn the adjusting bolt in direction
(b).Rebound damping setting:Minimum (soft):26 click(s) in direction (b)
Standard: 12 click(s) in direction (b)
Maximum (hard): 1 click(s) in direction (b)
1. High speed compression damping force adjusting boltHigh speed compression damping setting Minimum (soft):4 turn(s) out from the fully turned in posi-
tion
Standard: 2 turn(s) out from the fully turned in posi-
tion
Maximum (hard): Adjusting bolt fully turned in
1
(a)
(b)
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Low speed compression damping forceTo increase the compression damping force
and thereby harden the low speed compres-
sion damping, turn the compression damping
force adjusting screw in direction (a). To de-
crease the compression damping force and
thereby soften the low speed compression
damping, turn the adjusting screw in direction
(b).
WARNING
EWB00411These shock absorber assemblies contain
highly pressurized nitrogen gas. Read and
understand the following information be-
fore handling the shock absorber assem-
blies.
Do not tamper with or attempt to open
the cylinder assemblies.
 Do not subject the shock absorber as-
semblies to an open flame or other high
heat source. This may cause the unit to
explode due to excessive gas pressure.
1. Low speed compression damping force adjusting screw
1
(a)
(b)
Low speed compression damping setting
Minimum (soft):4 turn(s) out from the fully turned in posi-
tion
Standard: 2 turn(s) out from the fully turned in posi-
tion
Maximum (hard): Adjusting screw fully turned in
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Do not deform or damage the cylinders
in any way. Cylinder damage will result in
poor damping performance.
 Do not dispose of a damaged or worn
out shock absorber assembly yourself.
Take the shock absorber assembly to a
Yamaha dealer for any service. EBU40070Rear shock absorbersThe shock absorber assemblies are equipped
with the following adjusters.
 Spring preload adjusting nut
 Rebound damping force adjusting screw
 High speed compression damping force
adjusting bolt
 Low speed compression damping force
adjusting screw
 Crossover adjusting nut
WARNING
EWB04140Suspension components become hot
during operation. Never touch the com-
pression damping force adjusting bolt
and screw, the rebound damping force
adjusting bolt and screw, or the oil reser-
voir with your bare hand or skin until
suspension components have cooled.
 Always adjust the shock absorber as-
semblies on the left and right side to the
same setting. Uneven adjustment can
cause poor handling and loss of stability,
which could lead to an accident. Notes on adjusting the suspension
A special wrench and special tool can be
obtained at a Yamaha dealer to make the
spring preload or crossover setting adjust-
ment.
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When adjusting the damping force settings,
turn the adjuster in direction (a) until it
stops, and then count the turns or clicks in
direction (b).
 Although a damping force adjuster may
turn or click beyond the stated minimum
settings, such adjustments are ineffective
and may damage the suspension.NOTICEECB00091Never turn an adjusting mechanism be-
yond the minimum and maximum settings. Spring preload
1. Elevate the vehicle and place a suitable stand under the frame.
2. Loosen the locknut.
3. Turn the spring preload adjusting nut in
direction (a) to increase the spring pre-
load and thereby harden the suspension,
and in direction (b) to decrease the spring
preload and thereby soften the suspen-
sion.
TIPThe spring preload setting is determined by
measuring distance A, shown in the illustra-
tion. The shorter distance A is, the higher the
spring preload; the longer distance A is, the
lower the spring preload. 1. Locknut
2. Spring preload adjusting nut
3. Special wrench
1
3
2
(a)
(b)
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5
4. Tighten the locknut to the specifiedtorque. NOTICE: Always tighten the
locknut against the adjusting nut, and
then tighten it to the specified torque.
[ECB00082]
Crossover setting
The crossover setting adjusts the timing when
the shock absorber transitions from the soft
spring to the hard spring.TIP It is recommended to adjust the crossover
setting a similar distance whenever the
spring preload is adjusted.
 The crossover setting is measured from the
bottom of the spring retainer to the top of
the crossover locknut.
Spring preload setting:
Minimum (soft):Distance A =
610.9 mm (24.05 in)
Standard: Distance A =
598.2 mm (23.55 in)
Maximum (hard): Distance A =
585.5 mm (23.05 in)1. Distance A
1
Tightening torque: Locknut:41 N·m (4.1 kgf·m, 30 lb·ft)
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1. Loosen the crossover locknut as shown.2. Turn the crossover adjusting nut in direc-
tion (a) to increase the crossover setting
and in direction (b) to decrease the cross-
over setting.1. Distance B
2. Spring retainer
3. Crossover locknut
4. Crossover adjusting nut
32
4 1
1. Special tool
2. 3/8 inch (9.5 mm) drive wrench
3. Crossover locknut
12
3
90˚
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