Page 41 of 160
4-13
4
EBU30853Adjusting the front shock absorber as-
semblies (YFM70RSBH)The spring preload can be adjusted to suit the rid-
er’s weight and the riding conditions.
WARNING
EWB00401Always adjust the shock absorber assemblies
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 ac-
cident. Adjust the spring preload as follows.
Turn the spring preload adjusting ring in direction
(a) to increase the spring preload and thereby
harden the suspension, and in direction (b) to de-
crease the spring preload and thereby soften the
suspension.
Align the appropriate notch in the adjusting ring
with the position indicator on the shock absorber.
1. Slot
2. Projection
3. Seat holder
1
2
3
2
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4-14
4
TIPA special wrench can be obtained at a Yamaha
dealer to make this adjustment.
WARNING
EWB00411These shock absorber assemblies contain
highly pressurized nitrogen gas. Read and un-
derstand the following information before han-
dling the shock absorber assemblies.
1. Spring preload adjusting ring
2. Position indicator
(a)(b)
1. Special wrenchSpring preload setting:
Minimum (soft):1
Standard: 2
Maximum (hard): 5
1
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4-15
4
Do not tamper with or attempt to open the
cylinder assemblies.
Do not subject the shock absorber assem-
blies to an open flame or other high heat
source. This may cause the unit to explode
due to excessive gas pressure.
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 deal-
er for any service.
EBU30981Adjusting the front shock absorber as-
semblies (YFM70RSSH/YFM70RSXH)These shock absorber assemblies are equipped
with a spring preload adjusting nut, a rebound
damping force adjusting screw, with a compres-
sion damping force adjusting bolt (for fast com-
pression damping), and a compression damping
force adjusting screw (for slow compression
damping).
WARNING
EWB02492Suspension components become hot during
operation. Never touch the compression
damping force adjusting bolt and screw, the
rebound damping force adjusting screw or
the oil reservoir with your bare hand or skin
until suspension components have cooled.
Always adjust the shock absorber assem-
blies 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. NOTICEECB00091Never turn an adjusting mechanism beyond
the minimum and maximum settings. TIPAlthough the total number of clicks or turns of a
damping force adjusting mechanism may not ex-
actly match the following specifications due to
small differences in production, the actual number
of clicks or turns always represents the entire ad-
justing range. To obtain a precise adjustment, it
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4-16
4would be advisable to check the number of clicks
or turns of each damping force adjusting mecha-
nism and to modify the specifications as neces-
sary.
Spring preload
1. Loosen the locknut.
2. Turn the spring preload adjusting nut in direc- tion (a) to increase the spring preload and
thereby harden the suspension, and in direc-
tion (b) to decrease the spring preload and
thereby soften the suspension.
TIPA special wrench can be obtained at a Yamaha
dealer to make this adjustment.
The spring preload setting is determined by
measuring distance A, shown in the illustration.
The shorter distance A is, the higher the spring
preload; the longer distance A is, the lower the
spring preload. With each complete turn of the
adjusting nut, distance A is changed by 1.5 mm
(0.06 in).
1. Spring preload adjusting nut
2. Locknut
3. Special wrench
2
1
3
(a)
(b)
Spring preload setting:Minimum (soft):Distance A = 268.0 mm (10.55 in)
Standard: Distance A = 262.0 mm (10.31 in)
Maximum (hard): Distance A = 253.0 mm (9.96 in)
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Page 45 of 160
4-17
4
3. Tighten the locknut to the specified torque. 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 damping, and in di-
rection (b) to decrease the rebound damping force
and thereby soften the damping.
1. Distance ATightening torque: Locknut:42 N·m (4.2 kgf·m, 30 lb·ft)
1
1. Rebound damping force adjusting screw
1(a)
(b)
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Page 46 of 160
4-18
4Compression damping force
Compression damping force (for fast compres-
sion damping)To increase the compression damping force and
thereby harden the compression damping, turn
the compression damping force adjusting bolt in
direction (a). To decrease the compression damp-
ing force and thereby soften the compression
damping, turn the adjusting bolt in direction (b).Rebound damping setting:
Minimum (soft):30 click(s) in direction (b)*
Standard: 18 click(s) in direction (b)*
Maximum (hard): 1 click(s) in direction (b)*
* With the adjusting screw fully turned in di- rection (a)
1. Compression damping force adjusting bolt (for fast compression damping)Compression damping setting (for fast com-
pression damping):
Minimum (soft):2 turn(s) out from the fully turned in posi-
tion
Standard: 1.5 turn(s) out from the fully turned in po-
sition
Maximum (hard): Adjusting bolt fully turned in
1
(a)
(b) 1
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4-19
4
Compression damping force (for slow compres-
sion damping)To increase the compression damping force and
thereby harden the compression damping, turn
the compression damping force adjusting screw
in direction (a). To decrease the compression
damping force and thereby soften the compres-
sion damping, turn the adjusting screw in direction
(b).
WARNING
EWB00411These shock absorber assemblies contain
highly pressurized nitrogen gas. Read and un-
derstand the following information before han-
dling the shock absorber assemblies.
Do not tamper with or attempt to open the
cylinder assemblies.
Do not subject the shock absorber assem-
blies to an open flame or other high heat
source. This may cause the unit to explode
due to excessive gas pressure.
Do not deform or damage the cylinders in
any way. Cylinder damage will result in poor
damping performance.
1. Compression damping force adjusting screw (for slow
compression damping)
1 (a)
(b)
1
Compression damping setting (for slow com-
pression damping): Minimum (soft):18 click(s) in direction (b)*
Standard: 9 click(s) in direction (b)*
Maximum (hard): 1 click(s) in direction (b)*
* With the adjusting screw fully turned in di- rection (a)
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4-20
4
Do not dispose of a damaged or worn out
shock absorber assembly yourself. Take the
shock absorber assembly to a Yamaha deal-
er for any service.
EBU19047Adjusting the rear shock absorber as-
sembly (YFM70RSBH)The spring preload can be adjusted to suit the rid-
er’s weight and the riding conditions.NOTICEECB01091Never turn the adjusting mechanism beyond
the minimum and maximum settings. Adjust the spring preload as follows.
1. Loosen the locknut.
2. Turn the spring preload adjusting nut in direc- tion (a) to increase the spring preload and
thereby harden the suspension, and in direc-
tion (b) to decrease the spring preload and
thereby soften the suspension.
TIPA special wrench can be obtained at a Yamaha
dealer to make this adjustment.
The spring preload setting is determined by
measuring distance A, shown in the illustration.
The shorter distance A is, the higher the spring
preload; the longer distance A is, the lower the
spring preload. With each complete turn of the
adjusting nut, distance A is changed by 1.5 mm
(0.06 in). 1. Spring preload adjusting nut
2. Locknut
3. Special wrench
1
(b)
(a)
2
3
U2LS62E0.book Page 20 Thursday, February 25, 2016 8:44 AM