EBU17421
TABLE OF CONTENTS
LOCATION OF THE WARNING AND
SPECIFICATION LABELS .............................. 1-1
SAFETY INFORMATION ................................ 2-1
DESCRIPTION................................................ 3-1Left view ...................................................... 3-1
Right view.................................................... 3-1
Controls and instruments............................ 3-2
INSTRUMENT AND CONTROL
FUNCTIONS ................................................... 4-1 Main switch ................................................. 4-1
Indicator lights and warning lights .............. 4-1
Self-diagnosis device .................................. 4-3
Handlebar switches .................................... 4-3
Throttle lever ............................................... 4-4
Speed limiter ............................................... 4-5
Clutch lever ................................................. 4-5
Brake lever .................................................. 4-6
Brake pedal ................................................. 4-7
Parking brake lever ..................................... 4-7
Shift pedal ................................................... 4-8
Reverse knob “REV” ................................... 4-9 Fuel tank cap .............................................. 4-9
Fuel ............................................................. 4-9
Seat .......................................................... 4-11
Front shock absorbers (YFM70RSBJ) ...... 4-12
Front shock absorbers (YFM70RSXJ) ...... 4-14
Rear shock absorber (YFM70RSBJ) ......... 4-19
Rear shock absorber (YFM70RSXJ) ......... 4-21
PRE-OPERATION CHECKS .......................... 5-1 Fuel ............................................................. 5-4
Engine oil .................................................... 5-4
Coolant ....................................................... 5-4
Front and rear brakes ................................. 5-4
Throttle lever ............................................... 5-5
Drive chain .................................................. 5-5
Tires ............................................................ 5-5
Chassis fasteners ....................................... 5-7
Instruments, lights and switches ................ 5-7
OPERATION .................................................. 6-1 Starting the engine ..................................... 6-1
Shifting........................................................ 6-2
Operating the reverse knob and driving in reverse ...................................................... 6-4U2LS63E0.book Page 1 Friday, March 31, 2017 8:42 AM
3-1
3
EBU17681
DESCRIPTION
EBU17691Left view
EBU17701Right view
1. Engine oil tank
2. Coolant reservoir
3. Fuel tank cap
4. Idle adjusting screw
5. Battery
6. Fuses
7. Rear shock absorber
8. Drive chain
9. Footrest
10.Shift pedal
12
4
3
659
10
7
8
1. Muffler
2. Spark arrester
3. Air filter
4. Rear brake fluid reservoir
5. Crankcase engine oil filler bolt
6. Oil filter element
7. Spark plug
8. Front shock absorber
9. Crankcase engine oil drain bolt
10.Brake pedal
11.Footrest
12.Rear brake light switch
21
34
5678
109
11
12
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4-12
4To install the seat
Fit the slot in the seat onto the projection on the
fuel tank, insert the projection on the front of the
seat into the seat holder, and then push on the
seat at the rear. Make sure that the seat is securely
fitted.
EBU30854Front shock absorbers (YFM70RSBJ)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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4-13
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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4-14
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.
EBU30982Front shock absorbers (YFM70RSXJ)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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4-18
4Slow compression damping force
To increase the slow compression damping force
and thereby harden the compression damping,
turn the slow compression damping force adjust-
ing screw in direction (a). To decrease the slow
compression damping force and thereby soften
the compression 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. Slow compression damping force adjusting screw
1
(a)
(b)
1
Slow compression damping force settings: 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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4-19
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.
EBU19048Rear shock absorber (YFM70RSBJ)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
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4-20
43. 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]
WARNING
EWB00451This shock absorber assembly contains highly
pressurized nitrogen gas. If the shock absorb-
er assembly is damaged, it could explode
causing injury or property damage. Shock ab-
sorber cylinder damage could also result in
poor handling which could cause an accident.
Do not tamper with or attempt to open the
cylinder assembly.
Do not subject the shock absorber assembly
to an open flame or other high heat.
Do not deform or damage the cylinder in any
way.
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.
Spring preload setting:
Minimum (soft):Distance A = 238.5 mm (9.39 in)
Standard: Distance A = 228.5 mm (9.00 in)
Maximum (hard): Distance A = 223.5 mm (8.80 in)1. Distance A
1
Tightening torque:Locknut:42 N·m (4.2 kgf·m, 31 lb·ft)
U2LS63E0.book Page 20 Friday, March 31, 2017 8:42 AM