Page 166 of 182

9-63
9
EBU25741TroubleshootingAlthough Yamaha ATVs receive a thorough in-
spection before shipment from the factory, trouble
may occur during operation. Any problem in the
fuel, compression, or ignition systems, for exam-
ple, can cause poor starting and loss of power.
The following troubleshooting charts represent
quick and easy procedures for checking these vi-
tal systems yourself. However, should your ATV
require any repair, take it to a Yamaha dealer,
whose skilled technicians have the necessary
tools, experience, and know-how to service the
ATV properly.
Use only genuine Yamaha replacement parts. Im-
itation parts may look like Yamaha parts, but they
are often inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWB02281Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe inju-
ry or property damage. Make sure there are no
open flames or sparks in the area, including pi-
lot lights from water heaters or furnaces. UBDE60E0.book  Page 63  Monday, April 22, 2019  4:12 PM 
         
        
        
     
        
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9-65
9Engine overheating
WARNING
EWB02291Wait for the engine and radiator to cool before removing the radiator cap. You could be burned by
hot fluid and steam blown out under pressure. Always put a thick rag over the cap when opening.
Allow any remaining pressure to escape before completely removing the cap. TIP
Tap water can be used in an emergency. Change to the recommended coolant as soon as possible.
 The engine will tend to overheat if the radiator is caked with mud, or if the ATV is overloaded. Wait until the 
engine has cooled.
Check the coolant level in the 
reservoir and radiator.
The coolant level 
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer check
and repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again, have a 
Yamaha dealer check and repair the cooling system.
There is
leakage.
There is 
no leakage.
UBDE60E0.book  Page 65  Monday, April 22, 2019  4:12 PM 
         
        
        
     
        
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10-1
10
EBU25861
CLEANING AND STORAGE
EBU25882CleaningFrequent, thorough cleaning of your ATV will not
only enhance its appearance but will improve its
general performance and extend the useful life of
many components.1. Before cleaning the ATV: a. Block off the end of the exhaust pipe toprevent water entry. A plastic bag and
strong rubber band may be used.
b. Make sure the spark plug and all filler caps are properly installed.
2. If the engine case is excessively greasy, apply degreaser with a paint brush. Do not apply
degreaser to the wheel axles.
3. Rinse the dirt and degreaser off with a garden hose. Use only enough pressure to do the
job.  WARNING! Wet brakes may have re-
duced stopping ability, increasing the
chance of an accident. Test the brakes af-
ter washing. Apply the brakes several
times at slow speeds to let friction dry out
the linings.
 [EWB02312]
  NOTICE:  Excessive wa-
ter pressure may cause water seepage and deterioration of wheel bearings,
brakes, transmission seals and electrical
devices. Many expensive repair bills have
resulted from improper high-pressure de-
tergent applications such as those avail-
able in coin-operated car washers.
 [ECB00712]
4. Once most of the dirt has been hosed off,
wash all surfaces with warm water and mild,
detergent-type soap. An old toothbrush or
bottle brush is handy for hard-to-reach plac-
es.
5. Rinse the ATV off immediately with clean wa- ter and dry all surfaces with a chamois, clean
towel or soft absorbing cloth.
6. Clean the seat with a vinyl upholstery cleaner to keep the cover pliable and glossy.
7. Automotive type wax may be applied to all painted and chrome plated surfaces. Avoid
combination cleaner-waxes. Many contain
abrasives which may mar the paint or protec-
tive finish. When finished cleaning, start the
engine and let it idle for several minutes.
UBDE60E0.book  Page 1  Monday, April 22, 2019  4:12 PM 
         
        
        
     
        
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11-5
11
Spring:Coil spring
Shock absorber: Hydraulic damper
Wheel travel:
193 mm (7.6 in)Rear suspension:Type:Double wishbone
Spring:
Coil spring
Shock absorber: Hydraulic damper
Wheel travel: 232 mm (9.1 in)Electrical system:System voltage:12 V
Ignition system: TCI
Charging system:
AC magnetoBattery:Model:YTX20L-BS
Voltage, capacity:
12 V, 18.0 AhLights:Headlight:LED Handlebar-mounted light:
T15H, 35.0 W/36.5 W
Brake/tail light: LED
Meter lighting:
LED
Neutral indicator light: LED
High beam indicator light: LED
Reverse indicator light:
LED
Coolant temperature warning light: LED
Park indicator light: LED
Engine trouble warning light:
LED
High-range indicator light: LED
Low-range indicator light: LED
Differential gear lock indicator light:
LED
EPS warning light: LED
Battery voltage warning light: LED
Fuses:Main fuse:40.0 A
UBDE60E0.book  Page 5  Monday, April 22, 2019  4:12 PM 
         
        
        
     
        
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13-1
13
INDEX
AAccessories and loading ................................................ 7-5
Accessories, DC jack  ................................................... 5-29
Air filter element, cleaning  ........................................... 9-37
Axle boots  .................................................................... 9-48BBattery ......................................................................... 9-52
Battery voltage warning light  ......................................... 5-3
Brake fluid, changing  ................................................... 9-45
Brake fluid level, checking  ........................................... 9-44
Brake lever, front  ......................................................... 5-17
Brake levers, checking and lubricating  ........................ 9-49
Brake pads, checking the front and rear  ..................... 9-43
Brake pedal and rear brake lever ................................. 5-17
Brake pedal, checking and lubricating  ........................ 9-50
Brake pedal free play, adjusting  .................................. 9-47
Brakes .......................................................................... 9-42
Brakes, front and rear  .................................................... 6-3
Brake/tail light  .............................................................. 9-61CCables, checking and lubricating  ................................ 9-49
Carrier, front ................................................................. 5-26
Carrier, rear  .................................................................. 5-26
Chassis fasteners  .......................................................... 6-8
Cleaning ....................................................................... 10-1
Coolant .................................................................6-3, 9-29
Coolant temperature warning light  ................................ 5-3DDifferential gear oil  ................................................6-3, 9-27Drive select lever  ......................................................... 5-18
Drive select lever and driving in reverse  ........................ 7-2
EEmissions Certification label (for
 Europe)  .................... 12-1
Engine break-in .............................................................. 7-4
Engine oil  ....................................................................... 6-3
Engine oil and oil filter cartridge  .................................. 9-20
Engine stop switch  ...................................................... 5-11
Engine trouble warning light  .......................................... 5-3
EPS warning light  .......................................................... 5-4FFinal gear oil  ......................................................... 6-3, 9-25
Four-wheel drive/differential gear lock icon  .................. 5-4
Four-wheel drive switch (On-Command 4WD)  ............ 5-13
Front and rear brake lever free play, checking  ............ 9-46
Fuel ....................................................................... 5-20, 6-3
Fuel tank cap  ............................................................... 5-19
Fuses, replacing  .......................................................... 9-56HHandlebar switches  ..................................................... 5-11
Headlight beam, adjusting  ........................................... 9-60
Headlight bulb, replacing ............................................. 9-58
High beam indicator light ............................................... 5-2
High-range indicator light  .............................................. 5-2
Horn switch .................................................................. 5-12IIdentification numbers  ................................................... 1-1
Indicator lights and warning lights  ................................. 5-2
Instruments, lights and switches  ................................... 6-8
UBDE60E0.book  Page 1  Monday, April 22, 2019  4:12 PM 
         
        
        
     
        
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EBU26173
WARNING
ALWAYS
:
• use proper riding techniques to avoid 
  vehicle overturns on hills and rough 
  terrain  and in turns.
  seriously affect handling and control.
Improper ATV use can result in SEVERE INJURY or DEATH.
NEVER USE 
WITH DRUGS 
OR ALCOHOL
ALWAYS USE 
AN APPROVED  HELMET AND 
PROTECTIVE GEAR NEVER USE
ON PAVED ROADS NEVER CARRY 
PASSENGERS
NEVER
 operate:
  conditions.
  another vehicle.
  balance and steering and increase risk 
  of losing control.
LOCATE AND READ OWNER’S MANUAL. FOLLOW ALL INSTRUCTIONS AND WARNINGS.\
PRINTED IN USA
2019.05-0.5× 1 CR
(E)
UBDE60E0.book  Page 1  Monday, April 22, 2019  4:12 PM