OWNER’S MANUAL
1S3-28199-13
YFM70RSEW
READ THIS MANUAL CAREFULLY!
It contains important safety information.
It also includes basic maintenance and inspection proce-
YFM70RSEW
OWNER’S MANUAL
©2006 by Yamaha Motor Corporation, U.S.A.
1st edition, May 2006
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, U.S.A.
is expressly prohibited.
Printed in Japan.
P/N LIT-11626-20-34
Clutch lever ................................................ 4-6
Brake lever ................................................. 4-6
Brake pedal ................................................ 4-7
Parking brake lever .................................... 4-7
Shift pedal .................................................. 4-8
Reverse knob “REV” .................................. 4-9
Fuel tank cap ............................................. 4-9
Fuel .......................................................... 4-10
Seat ......................................................... 4-11
Adjusting the front shock absorber
assemblies .............................................4-12
Adjusting the rear shock absorber
assembly ................................................4-17
PRE-OPERATION CHECKS ..........................5-1
Pre-operation check list ............................. 5-1
Fuel ............................................................ 5-4
Engine oil ................................................... 5-4
Coolant ...................................................... 5-4
Front and rear brakes ................................ 5-5
Throttle lever .............................................. 5-6
Drive chain ................................................. 5-6
Tires ........................................................... 5-6
Measuring the tire pressure ....................... 5-7
Tire wear limit ............................................ 5-8
Chassis fasteners ...................................... 5-9
Instruments, lights and switches ................ 5-9
Periodic maintenance chart for the
emission control system ..........................8-3
General maintenance and lubrication
chart .........................................................8-4
Removing and installing the panel ............. 8-7
Checking the spark plug ............................ 8-7
Engine oil and oil filter element .................. 8-9
Coolant .................................................... 8-14
Cleaning the air filter element .................. 8-18
Cleaning the spark arrester ..................... 8-21
Adjusting the engine idling speed ............ 8-23
Adjusting the throttle cable free play ........ 8-24
Valve clearance ....................................... 8-25
Checking the front and rear brake
pads .......................................................8-25
Checking the brake fluid level .................. 8-26
Changing the brake fluid .......................... 8-28
Checking the front brake lever free
play ........................................................8-28
Checking the brake pedal position ........... 8-29
Adjusting the parking brake free play ...... 8-30
Brake light switches ................................. 8-31
Adjusting the clutch lever free play .......... 8-32
Drive chain slack ...................................... 8-33
Lubricating the drive chain ....................... 8-35
Checking and lubricating the cables ........ 8-36
Checking and lubricating the brake and
clutch levers ...........................................8-36
YAMAHA EXTENDED
SERVICE (Y.E.S.) .................................11-7
1-1
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ate an ATV with engine size greater than 90 cc.
●
Never allow a child under age 16 to operate an
ATV without adult supervision, and never allow
continued use of an ATV by a child if he or she
does not have the abilities to operate it safely.
●
Never carry a passenger on an ATV.
●
Always avoid operating an ATV on any paved
surfaces, including sidewalks, driveways, parking lots and streets.
●
Never operate an ATV on any public street, road
or highway, even a dirt or gravel one.
●
Never operate an ATV without wearing an approved motorcycle helmet that fits properly. You
should also wear eye protection (goggles or face
shield), gloves, boots, a long-sleeved shirt or a
jacket, and long pants.
●
Never consume alcohol or drugs before or while
operating this ATV.
●
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
1-2
●
Always follow proper procedures for climbing
hills as described in this manual. Check the terrain 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 or make sudden gear changes.
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 backward.
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 technique described in this manual on level ground.
Avoid crossing the side of a steep hill if possible.
●
Always use proper procedures if you stall or roll
backwards when climbing a hill. To avoid stalling, use the proper gear and maintain a steady
1-3
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4
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behind you when you operate in reverse. When
it is safe to proceed in reverse, go slowly.
●
Always use the size and type of tires specified in
this manual.
●
Always maintain proper tire pressure as described in this manual.
●
Never modify an ATV through improper installation or use of accessories.
●
Never exceed the stated load capacity for an
ATV. Cargo should be properly distributed and
securely attached. Reduce speed and follow instructions in this manual for carrying cargo or
pulling a trailer. Allow greater distance for braking.
FOR MORE INFORMATION ABOUT ATV SAFETY, call the Consumer Products Safety Commis-
sion at 1-800-638-2772, or the ATV Distributor’s
Safety Hotline at 1-800-852-5344.
1-4
EWB00030
HOW TO AVOID THE HAZARD
If you should swallow some gasoline or inhale a lot of gasoline vapor, or get some gasoline in your eyes, seek medical help
immediately. If gasoline spills on your skin,
wash with soap and water. If gasoline spills
on your clothing, change your clothes.
WARNING
POTENTIAL HAZARD
Starting or running the engine in a closed area.
WHAT CAN HAPPEN
Exhaust fumes are poisonous and may
cause loss of consciousness and death within a short time.
HOW TO AVOID THE HAZARD
Always operate your ATV in an area with adequate ventilation.
2-1
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2-2
2-3
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WARNING
Improper ATV use can result in SEVERE
INJURY or DEATH.
ALWAYS USE
NEVER USE
NEVER CARRY NEVER USE
AN APPROVED ON PUBLIC PASSENGERS WITH DRUGS
HELMET AND ROADS
OR ALCOHOL
PROTECTIVE
GEAR
NEVER
operate :
without proper training or instruction.
at speeds too fast for your skills or
the conditions.
on public roads-a collision can occur
with another vehicle.
with a passenger-passengers affect balance
and steering and increase risk
of losing control.
ALWAYS :
use proper riding techniques to avoid
vehicle overturns on hills and rough terrain
and it turns.
avoid paved surfaces-pavement may
seriously affect handling and control.
LOCATE AND READ OWNER'S MANUAL.
FOLLOW ALL INSTRUCTIONS AND WARNINGS.
(For replacement manual, call 1-800-532-1558)
5FE-21568-01
2
2-4
WARNING
This unit contains high pressure nitrogen gas.
Mishandling can cause explosion.
Read owner's manual for instructions.
Do not incinerate, puncture or open.
4AA-22259-80
WARNING
IMPROPER TIRE PRESSURE OR OVERLOADING CAN
CAUSE LOSS OF CONTROL.
LOSS OF CONTROL CAN RESULT IN SEVERE
INJURY OR DEATH.
OPERATING TIRE PRESSURE: Set with tires cold
Recommended
:
FRONT: 27.5
kPa,
{
0.275
kgf/cm
2
}
4.0 psi
REAR
:
27.5
kPa,
{
0.275
kgf/cm
2
}
4.0 psi
Minimum
:
FRONT: 24.5
kPa,
{
0.245
kgf/cm
2
}
3.5 psi
REAR
:
24.5
kPa,
{
0.245
kgf/cm
2
}
3.5 psi
Never set tire pressure below minimum.
It could cause the tire to dislodge from the rim.
LOADING
Maximum Vehicle Load
:
100kg,
(220 lbs).
Includes weight of operator, cargo and accessories.
5LP-21696-00
5
3-1
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EBU17700
Right view
4
1. Spark arrester
2. Seat
3. Headlight
4. Brake pedal
1
2
3
4
3-2
NOTE:
The ATV you have purchased may differ slightly
from the figures shown in this manual.
4
4-1
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1. Main switch
OFF ON
1
4-2
sion is in the neutral position.
EBU26700
Coolant temperature warning light “”
This warning light comes on when the engine overheats. When this occurs during operation, stop the
engine as soon as it is safe to do so and allow it to
cool down for about 10 minutes.
The electrical circuit of the warning light can be
checked by turning the key to “ON”. If the warning
light does not come on, and then go off, have a
Yamaha dealer check the electrical circuit.
CAUTION:
ECB00010
●
The engine may overheat if the ATV is overloaded. In this case, reduce the load to specification.
●
Start the engine after making sure that the
warning light is out. Continuous use while
the warning light is on may cause damage to
the engine.
EBU26710
Fuel level warning light “”
This warning light comes on when the fuel level
drops below approximately 2.6 L (0.69 US gal)
(0.57 Imp.gal). When this occurs, refuel as soon as
4-3
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EBU18060
Handlebar switches
EBU18070
Engine stop switch “ENG. STOP”
Set this switch to “RUN” before starting the engine.
The engine stop switch controls the ignition and
stops the engine when it is running. Use this switch
to stop the engine in an emergency situation. The
engine will not start or run when this switch is set
to “OFF”.
1. Light switch “LIGHTS”
2. Engine stop switch “ENG. STOP”
3. Start switch “START”
1
2
3
4-4
tle lever will increase the engine speed.
Regulate the speed of the ATV by varying the
throttle position. Because the throttle is springloaded, the ATV will decelerate, and the engine will
return to an idle any time the hand is removed from
the throttle lever.
Before starting the engine, check the throttle to be
sure it is operating smoothly. Make sure it returns
to the idle position as soon as the lever is released.
1. Throttle lever
4-5
1
2
3
4
5
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crease the maximum engine power available
and the maximum speed of the ATV, turn the
adjusting screw in direction (b).
3. Tighten the locknut.
1. Locknut
2. Adjusting screw
3. No more than 12 mm (0.47 in)
(a)
(b)
4-6
off system.)
EBU18411
Brake lever
The brake lever is located at the right handlebar
grip. To apply the front brake, pull the brake lever
toward the handlebar grip.
1. Clutch lever
4-7
1
2
3
4
5
6
7
8
9
10
11
EBU18510
Parking brake lever
Use the parking brake before starting the engine or
parking the ATV, especially on a slope. To apply
the parking brake, move the parking brake lever in
direction (a). To release the parking brake, move
the parking brake lever in direction (b).
1. Brake pedal
1
4-8
EWB00170
EBU18540
Shift pedal
This ATV is equipped with a constant-mesh 5speed forward and 1-speed reverse transmission.
The shift pedal is located on the left side of the engine and is used in combination with the clutch
WARNING
POTENTIAL HAZARD
Improper use of the parking brake.
WHAT CAN HAPPEN
The ATV could start moving unexpectedly if
the parking brake is not applied before starting the engine. This could cause loss of control or a collision.
The brake could overheat if you ride the ATV
without releasing the parking brake. You
could lose braking performance which could
cause an accident. You could also wear out
the brakes prematurely.
HOW TO AVOID THE HAZARD
Always set the parking brake before starting
the engine.
Always be sure you have released the parking brake before you begin to ride.
4-9
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EBU18720
Fuel tank cap
Remove the fuel tank cap by turning it counterclockwise.
1. Reverse knob “REV”
1
4-10
CAUTION:
ECB00070
Use only unleaded gasoline. The use of leaded
gasoline will cause severe damage to internal
engine parts, such as the valves and piston
1. Filler tube
2. Fuel level
Recommended fuel:
UNLEADED GASOLINE ONLY
Fuel tank capacity:
11.0 L (2.91 US gal) (2.42 Imp.gal)
Fuel reserve amount:
2.6 L (0.69 US gal) (0.57 Imp.gal)
1
2
4-11
1
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5
6
7
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9
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11
EWB00270
EBU18890
Seat
To remove the seat
Insert your hand between the rear of the seat and
the rear fender, pull the seat lock lever upward and
pull up the seat at the rear.
WARNING
POTENTIAL HAZARD
Improper care when refueling.
WHAT CAN HAPPEN
Fuel can spill, which can cause a fire and severe injury.
Fuel expands when it heats up. If the fuel
tank is overfilled, fuel could spill out due to
heat from the engine or the sun.
HOW TO AVOID THE HAZARD
Do not overfill the fuel tank. Be careful not to
spill fuel, especially on the engine or exhaust
pipe. Wipe up any spilled fuel immediately.
Be sure the fuel tank cap is closed securely.
Do not refuel right after the engine has been
running and is still very hot.
4-12
EBU27892
Adjusting the front shock absorber
assemblies
These shock absorber assemblies are equipped
with a spring preload adjusting nut, a rebound
damping force adjusting screw, with a compression damping force adjusting bolt (for fast compression damping), and a compression damping
force adjusting screw (for slow compression damping).
1. Projection
2. Seat holder
1
2
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