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
Multi-function display (YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK) .................... 4-6
Handlebar switches .................................. 4-12
Drive lever “2WD/4WD” (YFM70KDXK / YFM70KDHK) .......................................... 4-17
Throttle lever ............................................. 4-18
Speed limiter ............................................. 4-19
Front brake lever ....................................... 4-19
Brake pedal and rear brake lever .............. 4-20 Drive select lever ...................................... 4-21
Fuel tank cap ............................................ 4-21
Fuel ........................................................... 4-22
Seat .......................................................... 4-24
Storage compartment............................... 4-25
Front carrier .............................................. 4-26
Rear carrier ............................................... 4-26
Front and rear shock absorbers
(YFM70KPXK / YFM70KPAK /
YFM70KPHK / YFM70KPSK /
YFM70KPLK) .......................................... 4-26
Trailer hitch .............................................. 4-28
Auxiliary DC jack....................................... 4-29
PRE-OPERATION CHECKS .......................... 5-1 Fuel ............................................................. 5-3
Engine oil .................................................... 5-3
Final gear oil ............................................... 5-3
Differential gear oil ...................................... 5-3
Coolant ....................................................... 5-3
Front and rear brakes ................................. 5-3
Throttle lever ............................................... 5-4
Tires ............................................................ 5-4
Chassis fasteners ....................................... 5-7UB5K60E0.book Page 1 Monday, May 28, 2018 11:35 AM
Instruments, lights and switches ................ 5-7
OPERATION ................................................... 6-1 Starting the engine ...................................... 6-1
Operating the drive select lever and driving in reverse ....................................... 6-2
Engine break-in ........................................... 6-4
Parking ........................................................ 6-4
Parking on a slope ...................................... 6-5
Accessories and loading ............................. 6-5
RIDING YOUR ATV ........................................ 7-1 GETTING TO KNOW YOUR ATV ................ 7-2
RIDE WITH CARE AND GOOD JUDGMENT .............................................. 7-2
BE CAREFUL WHERE YOU RIDE ............... 7-9
TURNING YOUR ATV................................ 7-12
CLIMBING UPHILL ................................... 7-13
RIDING DOWNHILL .................................. 7-16
CROSSING A SLOPE................................ 7-17
CROSSING THROUGH SHALLOW WATER .................................................... 7-18
RIDING OVER ROUGH TERRAIN ............. 7-20
SLIDING AND SKIDDING .......................... 7-21
WHAT TO DO IF... ..................................... 7-22
WHAT TO DO... ......................................... 7-22 PERIODIC MAINTENANCE AND
ADJUSTMENT ............................................... 8-1
Owner’s Manual and tool kit....................... 8-2
Periodic maintenance chart: Emission control system .......................................... 8-3
Periodic maintenance chart: General maintenance and lubrication .................... 8-5
Removing and installing panels .................. 8-9
Checking the spark plug........................... 8-17
Engine oil and oil filter cartridge ............... 8-19
Final gear oil ............................................. 8-24
Differential gear oil .................................... 8-26
Coolant ..................................................... 8-28
Cleaning the air filter element ................... 8-36
Cleaning the spark arrester ...................... 8-39
V-belt case drain plug............................... 8-40
Adjusting the throttle lever free play ......... 8-41
Valve clearance......................................... 8-41
Brakes....................................................... 8-41
Checking the front brake pads and rear brake friction plates ................................ 8-42
Checking the brake fluid level .................. 8-43
Changing the brake fluid .......................... 8-44
Checking the front brake lever free play... 8-44
Adjusting the rear brake lever and brake pedal free play ........................................ 8-44
Axle boots................................................. 8-47
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YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK
EBU17992Low-range indicator light “ ” (YFM70KPXK /
YFM70KPAK / YFM70KPHK / YFM70KPSK /
YFM70KPLK)
This indicator light comes on when the transmis-
sion is in the low-range position.EBU17982High-range indicator light “ ” (YFM70KPXK /
YFM70KPAK / YFM70KPHK / YFM70KPSK /
YFM70KPLK)
This indicator light comes on when the transmis-
sion is in the high-range position.EBU17861Neutral indicator light “ ”
This indicator light comes on when the transmis-
sion is in the neutral position.EBU17831Reverse indicator light “ ”
This indicator light comes on when the transmis-
sion is in the reverse position.
1. Differential gear lo
ck indicator light “ ”
2. Low-range indicator light “L”
3. High-range indicator light “H”
4. Neutral indicator light “N”
5. Reverse indicator light “R”
6. Park indicator light “ ”
7. Four-wheel drive icon “ ”
8. Differential gear lock icon “ ”
9. Electric Power Steering warning light “EPS”
10.High beam indicator light “ ”
11.Battery voltage warning light “ ”
12.Coolant temperature warning light “ ”
13.Engine trouble warning light “ ”1
7,8
23456
910111213
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Four-wheel drive icon “ ” (YFM70KPXK /
YFM70KPAK / YFM70KPHK / YFM70KPSK /
YFM70KPLK)
This icon comes on when the drivetrain is set to
“4WD” (four-wheel drive).
TIPDue to the synchronizing mechanism in the differ-
ential gear case, the indicator may not come on
until the ATV starts moving. Differential gear lock icon “ ” and indicator
light “ ” (YFM70KPXK / YFM70KPAK /
YFM70KPHK / YFM70KPSK / YFM70KPLK)
This icon and this indicator light come on when
the drivetrain is set to “4WD” with the differential
gear locked.TIPWhen the On-Command differential gear lock
switch is set to “LOCK” or “4WD”, the “ ” icon
and the “ ” indicator light will flash until the dif-
ferential gear is completely locked or unlocked.
Turn the handlebar or start moving to help the dif-
ferential lock to engage or disengage.
EBU38113Multi-function display (YFM70KPXK /
YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK)The multi-function display is equipped with the
following:
speedometer1. Speedometer
2. Odometer/Tripmeter A/Tripmeter B/Service
tripmeter/Error code display
3. Clock/Hour meter/Voltage display/Coolant temperature display
4. Fuel gauge
5. “MODE” button
6. “SELECT” button
7. “RESET” button123
5
6
7
4
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EBU18102Start switch “ ”
Push this switch to crank the engine with the start-
er. See the starting instructions on page 6-1 prior
to starting the engine.EBU34123Light switch “ / /OFF”
Set this switch to “ ” to turn on the left and right
headlights (low beams) and the taillight. Set the
switch to “ ” to turn on the left and right head-
lights (high beams), the handlebar-mounted light
(YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK), and the taillight. Set
the switch to “OFF” to turn off all the lights.NOTICEECB00046Do not use the headlights with the engine
turned off for an extended period of time. The
battery may discharge to the point that the
starter will not have enough power to crank the
engine. If this should happen, remove the bat-
tery and recharge it. (See page 8-53.) EBU18171Horn switch “ ”
Press the switch to sound the horn.
EBU18192Override switch “OVERRIDE” (YFM70KPXK /
YFM70KPAK / YFM70KPHK / YFM70KPSK /
YFM70KPLK)
Top speed is normally limited when operating in
differential gear lock. If conditions require more
engine power when riding forward, push and hold
this switch to override the differential gear lock
speed limiting function. (See page 4-16.) Releas-
ing the switch restores the speed limiting function.
While the override switch is pushed, the segments
of the speedometer digits will appear as shown in
the figure.
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TIPIf the digits of the speedometer appear as shown
when the switch is NOT being pushed, this could
indicate a malfunction in the electrical system. In
this case, take the ATV to a Yamaha dealer at the
first opportunity.
WARNING
EWB00151Always ride at a slow speed when the ATV is in
four-wheel-drive differential gear lock, and al-
low extra time and distance for maneuvers.
All wheels turn at the same speed when the dif-
ferential is locked, so it takes more effort to
turn the ATV. The effort needed to turn increas-
es with the riding speed. You may lose control
and have an accident if you cannot make a
sharp enough turn for the speed you are trav-
eling.
EBU2660AOn-Command drive switch “2WD/4WD”
(YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK)
Stop the ATV and push this switch to change from
two-wheel drive to four-wheel drive or vice versa.
Select the appropriate drive according to the ter-
rain and riding conditions.
“2WD” (two-wheel drive): power is supplied to
the rear wheels only, giving a smooth ride and
fuel economy.
“4WD” (four-wheel drive): power is supplied to
the front and rear wheels, giving increased trac-
tion.
WARNING
EWB00164Always stop the ATV before changing from
two-wheel drive to four-wheel drive and vice
versa. The ATV handles differently in two-
wheel drive than in four-wheel drive in some
circumstances. Changing from two-wheel
drive to four-wheel drive or vice versa while
moving may cause the ATV to unexpectedly
handle differently. This could distract the oper-
ator and increase the risk of losing control and
of causing an accident.
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EBU30467On-Command drive switch “4WD/LOCK”
(YFM70KPXK / YFM70KPAK / YFM70KPHK /
YFM70KPSK / YFM70KPLK)
Stop the ATV and push this switch to change from
standard four-wheel drive to four-wheel drive with
the differential locked. Select the appropriate
switch position according to the terrain and the
conditions.
“4WD” (four-wheel drive): power is supplied to
the front and rear wheels, with the front differen-
tial unlocked.
“LOCK” (four-wheel drive with the differential
gear locked): power is supplied to the front and
rear wheels and the differential gear is locked.
Unlike in four-wheel drive, all wheels turn at the
same speed, giving maximum traction.
WARNING
EWB00132Always stop the ATV before changing from
four-wheel drive to four-wheel-drive differen-
tial gear lock or vice versa.
The ATV handles differently in four-wheel drive
than in differential gear lock in some circum-
stances. Changing from four-wheel drive to
differential gear lock or vice versa while mov-
ing may cause the ATV to handle differently un- expectedly. This could distract the operator
and increase the risk of losing control and
causing an accident.
To access the “4WD/LOCK” switch, set the
“2WD/4WD” switch to “4WD”, and then move the
drive switch lock lever to the right.TIP
When the switch is set to “LOCK” or “4WD”, the
differential gear lock icon and indicator light will
flash until the differential gear is completely
locked or unlocked.1. On-Command drive switch “4WD/LOCK”
2. Drive switch lock lever
LOCK4WD
1
2
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When the icon and indicator light are flashing,
turning the handlebar back and forth will help
the differential gear lock to engage or disen-
gage.
Riding before the differential gear is properly en-
gaged or disengaged (e.g., when the icon and
indicator light are flashing) will cause the vehicle
speed to be limited until the differential gear is
completely engaged or disengaged.
When the ATV is in four-wheel-drive differential
gear lock, the maximum traveling speed is limit-
ed to 35 km/h (22 mi/h). However, if conditions
require full engine power to be available, push
and hold the override switch to disable the dif-
ferential gear lock speed limiter. (See page
4-14.)
WARNING
EWB00141Always ride at a slow speed when the ATV is in
differential gear lock, and allow extra time and
distance for maneuvers.
All wheels turn at the same speed when the dif-
ferential gear is locked, so it takes more effort
to turn the ATV. The effort needed to turn in-
creases with the riding speed. You may lose control and have an accident if you cannot
make a sharp enough turn for the speed you
are traveling.
EBU37201Drive lever “2WD/4WD” (YFM70KDXK /
YFM70KDHK)Stop the vehicle and move the lever to change
from two-wheel drive to four-wheel drive or vice
versa. Select the appropriate drive according to
the terrain and riding conditions.1. Drive lever “2WD / 4WD”
2. “2WD” position
3. “4WD” position
2WD
4WD
12
3
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