
8-63
8
YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK
EBU25615Replacing the brake/tail light bulbIf the brake/tail light bulb burns out, replace it as
follows.
1. Remove the brake/tail light bulb holder (to- gether with the bulb) by turning it counter-
clockwise. 2. Remove the burnt-out bulb by pushing it in
and turning it counterclockwise.1. Handlebar-mounted light beam adjusting screw
(b)
(a)
1
1. Brake/tail light bulb holder
1. Brake/tail light bulb
1
1
UB5K60E0.book Page 63 Monday, May 28, 2018 11:35 AM

8-65
8
2. Lower the ATV to the ground.
3. Tighten the wheel nuts to the specified
torques.
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.
1. Tapered nutTightening torques:Front wheel nut:55 N·m (5.5 kgf·m, 41 lb·ft)
Rear wheel nut: 55 N·m (5.5 kgf·m, 41 lb·ft)1
UB5K60E0.book Page 65 Monday, May 28, 2018 11:35 AM

10-5
10
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:T19L, 30.0 W/30.0 W
Handlebar-mounted light:
T15H, 35.0 W/36.5 W (YFM70KPSK, YFM70KPLK,
YFM70KPAK, YFM70KPHK, YFM70KPXK)
Brake/tail light:
21.0 W/5.0 W
Meter lighting: LED (YFM70KPSK, YFM70KPLK, YFM70KPAK,
YFM70KPHK, YFM70KPXK)
Neutral indicator light: LED
High beam indicator light: LED (YFM70KPSK, YFM70KPLK, YFM70KPAK,
YFM70KPHK, YFM70KPXK) Fuel level warning light:
LED (YFM70KDHK, YFM70KDXK)
Reverse indicator light: LED
Coolant temperature warning light:
LED
Park indicator light: LED
Four-wheel-drive indicator light: 1.7 W (YFM70KDHK, YFM70KDXK)
Engine trouble warning light:
LED
High-range indicator light: LED (YFM70KPSK, YFM70KPLK, YFM70KPAK,
YFM70KPHK, YFM70KPXK)
Low-range indicator light: LED (YFM70KPSK, YFM70KPLK, YFM70KPAK,
YFM70KPHK, YFM70KPXK)
Differential gear lock indicator light: LED (YFM70KPSK, YFM70KPLK, YFM70KPAK,
YFM70KPHK, YFM70KPXK)
EPS warning light: LED (YFM70KPSK, YFM70KPLK, YFM70KPAK,
YFM70KPHK, YFM70KPXK)
Battery voltage warning light: LED (YFM70KPSK, YFM70KPLK, YFM70KPAK,
YFM70KPHK, YFM70KPXK)
Fuses:Main fuse:40.0 A
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10-6
10
Headlight fuse:10.0 A (YFM70KDHK, YFM70KDXK)
15.0 A (YFM70KPSK, YFM70KPLK, YFM70KPAK,
YFM70KPHK, YFM70KPXK)
Signaling system fuse:
10.0 A
Ignition fuse: 10.0 A
Auxiliary DC jack fuse: 10.0 A
Fuel injection system fuse:
15.0 A
Four-wheel-drive motor fuse: 10.0 A (YFM70KPSK, YFM70KPLK, YFM70KPAK,
YFM70KPHK, YFM70KPXK)
Radiator fan motor fuse: 20.0 A
EPS fuse: 40.0 A (YFM70KPSK, YFM70KPLK, YFM70KPAK,
YFM70KPHK, YFM70KPXK)EBU30403Noise and vibration levels statement (for Eu-
rope)
The figures quoted are emission levels and are not
necessarily safe working levels. Whilst there is a
correlation between the emission and exposure
levels, this cannot be used reliably to determine
whether or not further precautions are required. Factors that influence the actual level of exposure
of work-force include the characteristics of the
work room, the other sources of noise, etc. i.e. the
number of machines and other adjacent process-
es, and the length of time for which an operator is
exposed to the noise. Also the permissible expo-
sure level can vary from country. This information,
however, will enable the user of the machine to
make a better evaluation of the hazard and risk.UB5K60E0.book Page 6 Monday, May 28, 2018 11:35 AM

12-1
12
INDEX
AAccessories and loading ................................................ 6-5
Accessories, DC jack ................................................... 4-29
Air filter element, cleaning ........................................... 8-36
Axle boots .................................................................... 8-47BBattery ......................................................................... 8-53
Battery voltage warning light ......................................... 4-3
Brake fluid, changing ................................................... 8-44
Brake fluid level, checking ........................................... 8-43
Brake lever free play, checking the front ..................... 8-44
Brake lever, front ......................................................... 4-19
Brake levers, checking and lubricating ........................ 8-49
Brake light switches ..................................................... 8-48
Brake pads and friction plates, checking .................... 8-42
Brake pedal and rear brake lever ................................. 4-20
Brake pedal, checking and lubricating ........................ 8-50
Brakes .......................................................................... 8-41
Brakes, front and rear .................................................... 5-3
Brake/tail light bulb, replacing ..................................... 8-63CCables, checking and lubricating ................................ 8-48
Carrier, front ................................................................. 4-26
Carrier, rear .................................................................. 4-26
Chassis fasteners .......................................................... 5-7
Cleaning ......................................................................... 9-1
Coolant .................................................................5-3, 8-28
Coolant temperature warning light ................................ 4-3
DDifferential gear lock, indicators (YFM70KPXK / YFM70KPAK / YFM70KPHK / YFM70KPSK /
YFM70KPLK) ............................................................... 4-6
Differential gear oil ................................................5-3, 8-26
Drive lever 2WD/4WD (YFM70KDXK / YFM70KDHK) ............................................................ 4-17
Drive select lever ......................................................... 4-21
Drive select lever and driving in reverse ........................ 6-2EEngine break-in .............................................................. 6-4
Engine oil ....................................................................... 5-3
Engine oil and oil filter cartridge .................................. 8-19
Engine stop switch ...................................................... 4-13
Engine trouble warning light .......................................... 4-4
EPS warning light (for EPS model) ................................ 4-5FFinal gear oil ......................................................... 5-3, 8-24
Four-wheel drive icon (YFM70KPXK / YFM70KPAK / YFM70KPHK / YFM70KPSK / YFM70KPLK) .............. 4-6
Four-wheel drive indicator light (YFM70KDXK / YFM70KDHK) .............................................................. 4-5
Four-wheel drive switch (On-Command 4WD)
(YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK) ..................................... 4-15
Fuel ....................................................................... 4-22, 5-3
Fuel level warning light (YFM70KDXK / YFM70KDHK) .............................................................. 4-4
Fuel tank cap ............................................................... 4-21
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12-2
12
Fuses, replacing ........................................................... 8-56HHandlebar switches ..................................................... 4-12
Headlight beam, adjusting ........................................... 8-62
Headlight bulb, replacing ............................................. 8-59
High beam indicator light ............................................... 4-3
High-range indicator light (YFM70KPXK / YFM70KPAK / YFM70KPHK / YFM70KPSK /
YFM70KPLK) ............................................................... 4-2
Horn switch .................................................................. 4-14IIdentification numbers ................................................. 11-1
Indicator lights and warning lights ................................. 4-1
Instruments, lights and switches ................................... 5-7LLabel locations ............................................................... 1-1
Light switch .................................................................. 4-14
Low-range indicator light (YFM70KPXK / YFM70KPAK / YFM70KPHK / YFM70KPSK /
YFM70KPLK) ............................................................... 4-2MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................8-5
Maintenance chart, emission control system ................ 8-3
Model label ................................................................... 11-1
Multi-function display .....................................................4-6NNeutral indicator light .....................................................4-2
OOn-Command drive switch “4WD/LOCK” (YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK) ..................................... 4-16
Override switch (YFM70KPXK / YFM70KPAK / YFM70KPHK / YFM70KPSK / YFM70KPLK) ............. 4-14
Owner’s Manual and tool kit .......................................... 8-2PPanels, removing and installing ..................................... 8-9
Park indicator light ......................................................... 4-3
Parking ........................................................................... 6-4
Parking on a slope ......................................................... 6-5
Part locations ................................................................. 3-1RRear brake, adjusting the lever, pedal free play .......... 8-44
Rear knuckle pivots, lubricating ................................... 8-51
Reverse indicator light ................................................... 4-2
Riding your ATV ............................................................. 7-1SSafety information .......................................................... 2-1
Seat .............................................................................. 4-24
Shock absorber assemblies, adjusting the front and
rear (YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK) ..................................... 4-26
Spark arrester, cleaning ............................................... 8-39
Spark plug, checking ................................................... 8-17
Specifications .............................................................. 10-1
Speed limiter ................................................................ 4-19
Stabilizer bushes, checking ......................................... 8-51
Starting the engine ......................................................... 6-1
Start switch .................................................................. 4-14
UB5K60E0.book Page 2 Monday, May 28, 2018 11:35 AM