Page 11 of 150
1-1
1
EBU38860
VEHICLE IDENTIFICATION
EBU28205Identification numbersRecord the vehicle identification number and
model label information in the spaces provided
below.
VEHICLE IDENTIFICATION NUMBER:
MODEL LABEL INFORMATION:EBU26032Vehicle identification number
The vehicle identification number is stamped into
the frame. This 17-digit number is used to identify
your individual ATV.
EBU26053Model label
The model label is affixed at the location shown.1. Vehicle identification number
1
UBCX61E0.book Page 1 Friday, January 22, 2021 1:54 PM
Page 28 of 150

5-3
5
EBU29944Engine trouble warning light “ ”
This warning light comes on or flashes when an
electrical circuit monitoring the engine is not work-
ing correctly. When this occurs, have a Yamaha
dealer check the self-diagnostic system.
The electrical circuit of the warning light can be
checked by turning the key to “ ” (on). The
warning light should come on for a few seconds,
and then go off.
If the warning light does not come on initially when
the key is turned to “ ” (on), or if the warning
light remains on, have a Yamaha dealer check the
electrical circuit.EBU30762Self-diagnostic deviceThis model is equipped with a self-diagnostic de-
vice for various electrical circuits.
If a problem is detected in any of those circuits,
the engine trouble warning light will come on or
flash. If this occurs, have a Yamaha dealer check
the vehicle.
NOTICEECB01181To prevent engine damage, be sure to consult
a Yamaha dealer as soon as possible if this oc-
curs. EBU18068Handlebar switches1. Light switch “ / /OFF”
2. Engine stop switch “ / ”
3. Start switch “ ”
123
UBCX61E0.book Page 3 Friday, January 22, 2021 1:54 PM
Page 36 of 150
5-11
5About the recommended fuel
This model’s engine has been designed to use
regular unleaded gasoline. The research octane
number should be 91 or higher. If knocking or
pinging occurs, try a gasoline of a different brand
or higher octane.
TIPGasoline containing ethanol can be used if the
ethanol content does not exceed 10% (E10). Gas-
oline containing methanol is not recommended
because it can cause damage to the fuel system
or vehicle performance problems. NOTICEECB00071Use only unleaded gasoline. The use of leaded
gasoline will cause severe damage to internal
engine parts, such as the valves and piston
rings, as well as to the exhaust system.
EBU29892SeatTo remove the seat
Push the seat lock lever backward and pull up the
seat at the rear.1. Seat lock lever
1
UBCX61E0.book Page 11 Friday, January 22, 2021 1:54 PM
Page 52 of 150
6-6
6Tire pressure gauge
A low-pressure tire gauge is included as standard
equipment with your vehicle. (See page 9-2.)
When using the tire pressure gauge, make two
measurements and use the second reading as grit
in the gauge or tire valve could have caused the
first reading to be incorrect.
Tire wear
If the tire is damaged or the tire tread depth de-
creases to 3 mm (0.12 in) or less, replace the tire.
Tire information
This ATV is equipped with tubeless tires and tire
air valves. After extensive tests, only the tires list-
ed below are approved for this model by Yamaha.
1. Low-pressure tire gauge
2. Tire air valve
1
2
1. Tire tread depth
UBCX61E0.book Page 6 Friday, January 22, 2021 1:54 PM
Page 54 of 150

7-1
7
EBU19882
OPERATION
EBU19902Read the Owner’s Manual carefully before riding
the ATV. If there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWB00632Read the Owner’s Manual carefully to become
familiar with all controls in order to help pre-
vent any loss of control, which could cause an
accident or injury. EBU29954Starting the engineNOTICEECB00151See the “Engine break-in” section on page 7-5
prior to operating the engine for the first time. 1. Set the parking brake.
2. Turn the key to “ ” (on) and the engine stopswitch to “ ”.
The following warning lights should come on
for a few seconds, then go off.
Coolant temperature warning light
Fuel level warning light
Engine trouble warning light
NOTICEECB00826To avoid possible damage, do not operate the
ATV if a warning light does not work as de-
scribed above. 3. Shift the transmission into neutral. The neutral
indicator light should come on, if it does not
come on, have a Yamaha dealer check the
electrical circuit.TIPThis model is equipped with an ignition circuit cut-
off system. The engine can be started under the
following conditions.
The transmission is in neutral.
The clutch is disengaged with the transmission
in gear. However, it is recommended to shift
into neutral before starting the engine. 4. Completely close the throttle lever and start
the engine by pushing the start switch.
UBCX61E0.book Page 1 Friday, January 22, 2021 1:54 PM
Page 128 of 150

9-45
9Right side
TIPFor parts equipped with a grease nipple, use a
grease gun. EBU25096Lubricating the steering shaftThe steering shaft must be lubricated by a
Yamaha dealer at the intervals specified in the pe- riodic maintenance chart.
TIPFor parts equipped with a grease nipple, use a
grease gun. EBU30037BatteryThis model is equipped with a 12-volt VRLA
(valve-regulated lead-acid) battery. There is no
need to check the electrolyte or to add distilled
water. However, the battery lead connections
need to be checked and tightened, and the bat-
tery terminals cleaned if corroded. If the battery
seems to have discharged, recharge it as soon as
possible.TIP Wear gloves and eye protection in a ventilated
area away from sparks and open flames. Wash
hands after handling.
It is recommended to have the battery serviced
by a Yamaha dealer.
1. Upper grease nipple
2. Lower grease nippleRecommended lubricant:
Lithium-soap-based grease
1
2
UBCX61E0.book Page 45 Friday, January 22, 2021 1:54 PM
Page 144 of 150

11-2
11
Starting system:Electric starter
Lubrication system: Dry sumpEngine oil:Recommended brand:
SAE viscosity grades:
5W-30, 10W-30, 10W-40, 15W-40, 20W-40, 20W-50
Recommended engine oil grade: API service SG type or higher, JASO standard MA
Quantity: Oil change: 1.75 L (1.85 US qt, 1.54 Imp.qt) With oil filter removal:
1.85 L (1.96 US qt, 1.63 Imp.qt)
Coolant quantity:Radiator (including all routes):
1.68 L (1.78 US qt, 1.48 Imp.qt)
Coolant reservoir (up to the maximum level mark): 0.25 L (0.26 US qt, 0.22 Imp.qt)Air filter:Air filter element:
Wet element
Air filter oil grade: Foam air-filter oilFuel:Recommended fuel:
Regular unleaded gasoline (Gasohol [E10] acceptable)
Minimum research octane: 91
Fuel tank capacity: 11 L (2.9 US gal, 2.4 Imp.gal)
Fuel reserve amount:
1.6 L (0.42 US gal, 0.35 Imp.gal)Throttle body:ID mark:1S3HSpark plug (s):Manufacturer/model:NGK/CR8E
Spark plug gap: 0.7–0.8 mm (0.028–0.031 in)
0 10 30 50 70 90 110 130 ˚F
–20 –10 0 10 20 30 40 50 ˚CSAE 5W-30
SAE 10W-30
SAE 10W-40
SAE 15W-40
SAE 20W-40SAE 20W-50
UBCX61E0.book Page 2 Friday, January 22, 2021 1:54 PM
Page 145 of 150
11-3
11
Drivetrain:Primary reduction ratio:2.265 (77/34)
Secondary reduction ratio:
2.714 (38/14)
Final drive: Chain
Clutch type: Wet, multiple-disc
Transmission type:
5-speed with reverse
Gear ratio: 1st:
2.923 (38/13)
2nd: 2.000 (28/14)
3rd: 1.471 (25/17)
4th:
1.136 (25/22)
5th: 0.917 (22/24)
Reverse gear: 4.462 (24/13 x 29/12)Front tire:Size:AT22 x 7-10
Manufacturer/model: MAXXIS/MS13Rear tire:Size:AT20 x 10-9 Manufacturer/model:
MAXXIS/M976Y
Tire air pressure (measured on cold tires):Vehicle load:
0.0–100.0 kg (0–220 lb)
Recommended: Front:
27.5 kPa (0.275 kgf/cm², 4.0 psi)
Rear: 27.5 kPa (0.275 kgf/cm², 4.0 psi)
Minimum: Front:24.5 kPa (0.245 kgf/cm², 3.6 psi)
Rear: 24.5 kPa (0.245 kgf/cm², 3.6 psi)Front wheel:Rim size:10 x 5.5ATRear wheel:Rim size:
9 x 8.0ATFront brake:Type:Hydraulic disc brakeRear brake:Type:Hydraulic disc brakeBrake fluid:Specified brake fluid:
DOT 4
UBCX61E0.book Page 3 Friday, January 22, 2021 1:54 PM