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4-23
4
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.
Compression damping force
Fast compression damping force
To increase the fast compression damping force
and thereby harden the compression damping,
turn the fast compression damping force adjust-
ing bolt in direction (a). To decrease the fast com-
pression damping force and thereby soften the
compression damping, turn the adjusting bolt in
direction (b).
Tightening torque:
Locknut:42 N·m (4.2 kgf·m, 31 lb·ft)
1. Rebound damping force adjusting screw
1
(b) (a)
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)
U2LS63E0.book Page 23 Friday, March 31, 2017 8:42 AM
Page 50 of 158
4-24
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).1. Fast compression damping force adjusting boltFast compression damping force settings:
Minimum (soft):2 turn(s) out from the fully turned in posi-
tion
Standard: 1.25 turn(s) out from the fully turned in
position
Maximum (hard): Adjusting bolt fully turned in
1
(b)
(a)
1
1. Slow compression damping force adjusting screwSlow compression damping settings: Minimum (soft):18 click(s) in direction (b)*
Standard: 10 click(s) in direction (b)*
Maximum (hard): 1 click(s) in direction (b)*
* With the adjusting screw fully turned in di- rection (a)
1
(b)
(a)
1
U2LS63E0.book Page 24 Friday, March 31, 2017 8:42 AM
Page 51 of 158
4-25
4
WARNING
EWB00431This shock absorber assembly contains highly
pressurized nitrogen gas. Read and under-
stand the following information before han-
dling the shock absorber assembly.
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 source.
This may cause the unit to explode due to ex-
cessive gas pressure.
Do not deform or damage the cylinder 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. U2LS63E0.book Page 25 Friday, March 31, 2017 8:42 AM
Page 52 of 158

5-1
5
EBU19203
PRE-OPERATION CHECKS
EBU19226Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always
follow the inspection and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWB00482Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equip-
ment damage. Do not operate the vehicle if you find any problem. If a problem cannot be corrected
by the procedures provided in this manual, have the vehicle inspected by a Yamaha dealer. Before using this vehicle, check the following points:
ITEMROUTINE PAGE
Fuel • Check fuel level in fuel tank,
and add recommended fuel if neces-
sary.
• Check fuel line for leakage. Correct if necessary. 4-9, 5-4
Engine oil • Check oil level in engine oil
tank, and add recommended oil to
specified level if necessary.
• Check ATV for oil leakage. Correct if necessary. 5-4, 8-13
Coolant • Check coolant level in reservoir, and add recommended coolant to
specified level if necessary.
• Check cooling system for leakage. Correct if necessary. 5-4, 8-18
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5-2
5
Front brake• Check operation. If soft or spongy, have Yamaha dealer bleed hy-
draulic system.
• Check brake pads for wear, and replace if necessary.
• Check brake fluid level in reservoir, and add specified brake fluid to specified level if necessary.
• Check hydraulic system for leakage. Correct if necessary. 5-4, 8-30, 8-31, 8-34
Rear brake • Check operation. If soft or spongy, have Yamaha dealer bleed hy-
draulic system.
• Check brake pads for wear, and replace if necessary.
• Check brake fluid level in reservoir, and add specified brake fluid to specified level if necessary.
• Check hydraulic system for leakage. Correct if necessary. 5-4, 8-30, 8-31, 8-35
Clutch • Check operation, and correct if necessary.
• Lubricate cable if necessary.
• Check lever free play, and adjust if necessary. 8-37
Throttle lever • Make sure that operation is smooth. Lubricate cable and lever
housing if necessary.
• Check lever free play, and adjust if necessary. 5-5, 8-29
Control cables • Make sure that operation is smooth. Lubricate if necessary. 8-41
Drive chain • Check chain slack, and adjust if necessary.
• Check chain condition. Lubricate if necessary. 5-5, 8-39, 8-41
Wheels and tires • Check wheel condition, and replace if damaged.
• Check tire condition and tread depth. Replace if necessary.
• Check air pressure. Correct if necessary. 5-5
Shift pedal • Make sure that operation is smooth.
• Correct if necessary.
8-42
Brake pedal • Make sure that operation is smooth. Lubricate pedal pivoting point
if necessary. 8-42
ITEM ROUTINE PAGE
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Page 54 of 158
5-3
5
Brake and clutch levers• Make sure that operation is smooth. Lubricate lever pivoting points
if necessary. 8-42
Chassis fasteners • Make sure that all nuts, bolts and screws are properly tightened. 5-7
Instruments, lights and
switches • Check operation, and correct if necessary. 5-7
ITEM ROUTINE PAGEU2LS63E0.book Page 3 Friday, March 31, 2017 8:42 AM
Page 55 of 158

5-4
5
EBU19542FuelMake sure that there is sufficient fuel in the tank.
(See page 4-9.)EBU19561Engine oilMake sure that the engine oil is at the specified
level. Add oil as necessary. (See page 8-13.)EBU19632CoolantMake sure that the coolant is at the specified level.
Add coolant as necessary. (See page 8-18.)TIPThe coolant level must be checked on a cold en-
gine since the level varies with engine tempera-
ture. EBU19713Front and rear brakesBrake lever and brake pedal
Check that there is no free play in the brake le-
ver. If there is free play, have a Yamaha dealer
check the brake system.
Check for correct brake pedal height. (See page
8-35.) If the pedal height is incorrect, have a
Yamaha dealer adjust it.
Check the operation of the lever and pedal.
They should move smoothly and there should
be a firm feeling when the brakes are applied. If
not, have a Yamaha dealer check the brake sys-
tem.
Brake fluid level
Check the brake fluid level. Add fluid if necessary.
(See page 8-31.)
Brake fluid leakage
Check to see if any brake fluid is leaking out of the
pipe joints or brake fluid reservoirs. Apply the
brakes firmly for one minute. If there is any leak-
age, have a Yamaha dealer check the brake sys-
tem. Specified brake fluid:
DOT 4U2LS63E0.book Page 4 Friday, March 31, 2017 8:42 AM
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5-5
5Brake operation
Test the brakes at slow speed after starting out to
make sure they are working properly. If the brakes
do not provide proper braking performance,
check the brake pads for wear. (See page 8-30.)
EBU19762Throttle leverCheck the operation of the throttle lever. It must
open smoothly and spring back to the idle position
when released. Have a Yamaha dealer correct if
necessary.EBU19771Drive chainCheck the condition of the drive chain and check
the drive chain slack. Lubricate and adjust the
drive chain as necessary. (See page 8-39.)EBU19816TiresCheck tire pressure regularly to make sure it is at
the recommended specifications. Also check for
wear and damage. Tire pressure
Use a tire pressure gauge to check and adjust tire
air pressure when the tires are cold. The tire air
pressure must be equal on both sides.
WARNING! Operation of this vehicle with im- proper tire pressure may cause severe injury or
death from loss of control or rollover. Tire
pressure below the minimum specified could
also cause the tire to dislodge from the rim un-
der severe riding conditions.
[EWB02542]
Recommended tire pressure: Front27.5 kPa (0.275 kgf/cm², 4.0 psi)
Rear 27.5 kPa (0.275 kgf/cm², 4.0 psi)
Minimum tire pressure: Front24.5 kPa (0.245 kgf/cm², 3.6 psi)
Rear 24.5 kPa (0.245 kgf/cm², 3.6 psi)
Maximum tire seating pressure: Front250 kPa (2.5 kgf/cm², 36 psi)
Rear 250 kPa (2.5 kgf/cm², 36 psi)
U2LS63E0.book Page 5 Friday, March 31, 2017 8:42 AM