Adjusting the rear brake lever and brake pedal free play ........................................ 8-46
Axle boots ................................................. 8-48
Brake light switches .................................. 8-49
Checking and lubricating the cables......... 8-49
Checking and lubricating the front and rear brake levers ..................................... 8-50
Checking and lubricating the brake pedal ....................................................... 8-51
Checking the wheel hub bearings............. 8-51
Checking the stabilizer bushes ................. 8-52
Lubricating the rear knuckle pivots ........... 8-52
Lubricating the steering shaft ................... 8-53
Battery....................................................... 8-54
Replacing a fuse ....................................... 8-57
Replacing a headlight bulb ....................... 8-59
Adjusting a headlight beam ...................... 8-62
Replacing the tail/brake light bulb ............ 8-63
Removing a wheel ..................................... 8-64
Installing a wheel....................................... 8-65
Troubleshooting ........................................ 8-66
Troubleshooting charts ............................. 8-67
CLEANING AND STORAGE ........................... 9-1 Cleaning ...................................................... 9-1
Storage........................................................ 9-2 SPECIFICATIONS ........................................ 10-1
CONSUMER INFORMATION....................... 11-1
Identification numbers .............................. 11-1
INDEX .......................................................... 12-1
UB1660E0.book Page 3 Thursday, February 26, 2015 4:01 PM
2-2
2
Never operate at speeds too fast for your skills
or the riding conditions. Always go at a speed
that is proper for the terrain, visibility, operating
conditions, and your experience.
Never attempt wheelies, jumps, or other stunts.
Always inspect your ATV each time you use it to
make sure it is in safe operating condition. Al-
ways follow the inspection and maintenance
procedures and schedules described in this
manual.
Always keep both hands on the handlebars and
both feet on the footboards of the ATV during
operation.
Always go slowly and be extra careful when op-
erating on unfamiliar terrain. Always be alert to
changing terrain conditions when operating the
ATV.
Never operate on excessively rough, slippery or
loose terrain until you have learned and prac-
ticed the skills necessary to control the ATV on
such terrain. Always be especially cautious on
these kinds of terrain.
Always follow proper procedures for turning as
described in this manual. Practice turning at low
speeds before attempting to turn at faster
speeds and never turn at excessive speeds.
Never operate the ATV on hills too steep for the
ATV or for your abilities. Practice on smaller hills
before attempting larger hills.
Always follow proper procedures for climbing
hills as described in this manual. Check the ter-
rain carefully before you start up any hill. Never
climb hills with excessively slippery or loose
surfaces. Shift your weight forward. Never open
the throttle suddenly. Never go over the top of a
hill at high speed.
Always follow proper procedures for going
down hills and for braking on hills as described
in this manual. Check the terrain carefully before
you start down any hill. Shift your weight back-
ward. Never go down a hill at high speed. Avoid
going down a hill at an angle that would cause
the vehicle to lean sharply to one side. Go
straight down the hill where possible.
Always follow proper procedures for crossing
the side of a hill as described in this manual.
Avoid hills with excessively slippery or loose
surfaces. Shift your weight to the uphill side of
the ATV. Never attempt to turn the ATV around
on any hill until you have mastered the turning
UB1660E0.book Page 2 Thursday, February 26, 2015 4:01 PM
2-5
2ungrounded or broken wiring. Visually check
for broken wiring and leaking fuel. Leaking
fuel can be confirmed by the odor of gasoline.
4. Once immediate safety hazards are con- firmed not to exist, you may remove your hel-
met to more closely inspect your vehicle.
Check for external signs of wear, broken
parts, fluid leaks, cracks in the frame, sus-
pension damage, wheel damage, and so on.
Fuel, oil, and coolant usually give off a notice-
able odor.
5. If your vehicle will not restart or if it is unsafe to ride, then turn off all vehicle systems (en-
gine stop switch, main switch, and fuel cock),
and then signal or go for help.
Aftermarket Parts, Accessories, and Modifica-
tions
While you may find aftermarket products similar in
design and quality to genuine Yamaha accesso-
ries, recognize that some aftermarket accessories
or modifications are not suitable because of po-
tential safety hazards to you or others. Installing
aftermarket products or having other modifica-
tions performed to your vehicle that change any of
the vehicle’s design or operation characteristics
can put you and others at greater risk of serious injury or death. You are responsible for injuries re-
lated to changes in the vehicle. Keep the following
guidelines in mind, as well as those provided un-
der “Loading” when mounting accessories.
Never install accessories that would impair the
performance of your ATV. Carefully inspect the
accessory before using it to make sure that it
does not in any way reduce ground clearance,
limit suspension travel, steering travel or control
operation.
Accessories fitted to the ATV can create insta-
bility due to improper weight distribution.
Bulky or large accessories may seriously affect
the stability of the ATV.
Certain accessories can displace the operator
from his or her normal riding position. This im-
proper position limits the freedom of movement
of the operator and may limit control ability,
therefore, such accessories are not recom-
mended.
Use caution when adding electrical accesso-
ries. If electrical accessories exceed the capac-
ity of the ATV’s electrical system, an electric
failure could result, which could cause a dan-
gerous loss of lights or engine power.
UB1660E0.book Page 5 Thursday, February 26, 2015 4:01 PM
3-2
3
EBU17714Controls and instrumentsYFM70KDXG / YFM70KDHGYFM70KPXG / YFM70KPHG / YFM70KPSG1. Drive select lever
2. Rear brake lever
3. Handlebar switches
4. Drive lever “2WD”/“4WD”
5. Warning and indicator lights
6. Front brake fluid reservoir
7. Front brake lever
8. Throttle lever
9. Auxiliary DC jack
10.Main switch12345678910
1. Drive select lever
2. Rear brake lever
3. Handlebar switches
4. Drive lever “2WD”/“4WD” (YFM70KPXG / YFM70KPHG)
5. Multi-function display
6. Front brake fluid reservoir
7. On-Command four-wheel-drive/differential gear lock
switch (YFM70KPSG)
8. Front brake lever
9. Throttle lever
10.Auxiliary DC jack
11.Main switch123456
78 91011
UB1660E0.book Page 2 Thursday, February 26, 2015 4:01 PM
4-2
4
EBU26697Indicator lights and warning lightsYFM70KDXG / YFM70KDHGYFM70KPXG / YFM70KPHG / YFM70KPSG1. Fuel level warning light “ ”
2. Engine trouble warning light “ ”
3. Coolant temperature warning light “ ”
4. Neutral indicator light “N”
5. Reverse indicator light “R”
6. Park indicator light “P”
7. Four-wheel-drive indicator light “ ”
123456
7
1. On-Command differential gear lock indicator light “DIFF.
LOCK” (YFM70KPSG)
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 “P”
7. Four-wheel-drive indicator “ ”
8. On-Command differential gear lock indicator “ ” (YFM70KPSG)
9. Engine trouble warning light “ ”
10.Coolant temperature warning light “ ”
11.Electric Power Steering warning light “EPS”
7,8
1
2
3
4
5
6
91011
UB1660E0.book Page 2 Thursday, February 26, 2015 4:01 PM
4-5
4
TIPIf the engine is stopped using the engine stop
switch and the key is in the “ ” (on) position,
the EPS warning light comes on to indicate that
the power assistance for the steering is not
functioning.
If the steering load is too heavy (i.e., excessive
steering use when the ATV is traveling at a slow
speed), the power assist is reduced to protect
the EPS motor from overheating. EBU34250Four-wheel-drive indicator light “ ”
(YFM70KDXG / YFM70KDHG)
This indicator light comes on when the drive lever
is set to the “4WD” position.TIPDue to the synchronizing mechanism in the differ-
ential gear case, the light may not come on until
the ATV starts moving.
Four-wheel-drive indicator “ ” (YFM70KPXG /
YFM70KPHG / YFM70KPSG)
This indicator comes on when the drive lever or
the On-Command four-wheel-drive switch is set
to the “4WD” position.TIPDue to the synchronizing mechanism in the differ-
ential gear case, the indicator may not come on
until the ATV starts moving. On-Command differential gear lock
indicator “ ” and indicator light “DIFF. LOCK”
(YFM70KPSG)
This indicator and indicator light come on when
the On-Command differential gear lock switch is
set to the “LOCK” position.TIPWhen the On-Command differential gear lock
switch is set to “LOCK” or “4WD”, the
indicator “ ” and the indicator light “DIFF. LOCK”
will flash until the differential gear is completely
locked or unlocked. If the indicator and the indica-
tor light continue to flash, the differential is not
UB1660E0.book Page 5 Thursday, February 26, 2015 4:01 PM
4-11
4
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.
EBU26608On-Command four-wheel-drive switch
“2WD”/“4WD” (YFM70KPSG)
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. This ATV is equipped with a switch to change from
two-wheel drive to four-wheel drive and vice ver-
sa. Select the appropriate drive according to the
terrain and the conditions.
“2WD” (two-wheel drive): Power is supplied to
the rear wheels.
UB1660E0.book Page 11 Thursday, February 26, 2015 4:01 PM
4-12
4
“4WD” (four-wheel drive): Power is supplied to
the rear and front wheels.
To change from two-wheel drive to four-wheel
drive, stop the ATV and push the switch in to the
“4WD” position. Then, the four-wheel-drive
indicator “ ” comes on in the multi-function dis-
play.
To change from four-wheel drive to two-wheel
drive, stop the ATV and push the switch in to the
“2WD” position.
EBU30463On-Command differential gear lock switch
“4WD”/“LOCK” (YFM70KPSG)
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.
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
1. On-Command four-wheel-drive switch “2WD”/“4WD”
2WD
4WD
1
UB1660E0.book Page 12 Thursday, February 26, 2015 4:01 PM