OPERATION ................................................... 6-1Starting the engine ...................................... 6-1
Shifting ........................................................ 6-2
Operating the reverse knob and driving in reverse ...................................................... 6-4
Engine break-in ........................................... 6-5
Parking ........................................................ 6-5
Parking on a slope ...................................... 6-6
Accessories and loading ............................. 6-6
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 ............... 7-8
TURNING YOUR ATV................................ 7-11
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.......................... 7-20
WHAT TO DO IF... ..................................... 7-21
WHAT TO DO... ......................................... 7-22 PERIODIC MAINTENANCE AND
ADJUSTMENT ............................................... 8-1
Owner’s manual and tool kit ....................... 8-2
Periodic maintenance chart for the emission control system ........................... 8-3
General maintenance and lubrication chart.......................................................... 8-5
Removing and installing the panel............ 8-10
Checking the spark plug........................... 8-10
Engine oil and oil filter element................. 8-13
Coolant ..................................................... 8-17
Cleaning the air filter element ................... 8-21
Cleaning the spark arrester ...................... 8-25
Adjusting the engine idling speed ............ 8-27
Adjusting the throttle lever free play ......... 8-28
Valve clearance......................................... 8-29
Adjusting the reverse lock release cable ....................................................... 8-29
Brakes....................................................... 8-29
Checking the front and rear brake pads... 8-29
Checking the brake fluid level .................. 8-31
Changing the brake fluid .......................... 8-33
Checking the front brake lever free play... 8-33
Checking the brake pedal height.............. 8-34
Adjusting the parking brake free play ....... 8-34
Brake light switches ................................. 8-36
Adjusting the clutch lever free play .......... 8-36U2LS62E0.book Page 2 Thursday, February 25, 2016 8:44 AM
5-4
5
EBU19542FuelMake sure that there is sufficient fuel in the tank.
(See page 4-10.)EBU19561Engine oilMake sure that the engine oil is at the specified
level. Add oil as necessary. (See page 8-13.)EBU19632CoolantMake sure that the coolant is at the specified level.
Add coolant as necessary. (See page 8-17.)TIPThe coolant level must be checked on a cold en-
gine since the level varies with engine tempera-
ture. EBU19713Front and rear brakesBrake lever and brake pedal
Check that there is no free play in the brake le-
ver. If there is free play, have a Yamaha dealer
check the brake system.
Check for correct brake pedal height. (See page
8-34.) If the pedal height is incorrect, have a
Yamaha dealer adjust it.
Check the operation of the lever and pedal.
They should move smoothly and there should
be a firm feeling when the brakes are applied. If
not, have a Yamaha dealer check the brake sys-
tem.
Brake fluid level
Check the brake fluid level. Add fluid if necessary.
(See page 8-31.)
Brake fluid leakage
Check to see if any brake fluid is leaking out of the
pipe joints or brake fluid reservoirs. Apply the
brakes firmly for one minute. If there is any leak-
age, have a Yamaha dealer check the brake sys-
tem. Specified brake fluid:
DOT 4U2LS62E0.book Page 4 Thursday, February 25, 2016 8:44 AM
8-34
8
EBU24614Checking the brake pedal heightThe brake pedal height must be checked and, if
necessary, adjusted at the intervals specified in
the periodic maintenance and lubrication chart.
The top of the brake pedal should be positioned
15.3 mm (0.60 in) below the top of the footrest as
shown. If the brake pedal is not positioned as
specified, have a Yamaha dealer adjust it.
EBU24716Adjusting the parking brake free playThe parking brake free play must be checked and,
if necessary, adjusted at the intervals specified in
the periodic maintenance and lubrication chart.
Cable length “A” should measure 47–51 mm
(1.85–2.01 in). Adjust the parking brake free play
as follows.
1. No brake lever free play
1. Brake pedal height
1
U2LS62E0.book Page 34 Thursday, February 25, 2016 8:44 AM
10-1
10
EBU25962
SPECIFICATIONS
Dimensions:Overall length:1845 mm (72.6 in)
Overall width: 1155 mm (45.5 in)
Overall height:
1115 mm (43.9 in)
Seat height: 830 mm (32.7 in)
Wheelbase: 1280 mm (50.4 in)
Ground clearance:
240 mm (9.4 in)
Minimum turning radius: 3500 mm (138 in)Weight:Curb weight:
192.0 kg (423 lb)Noise and vibration level:Noise level (77/311/EEC):84.0 dB(A) at 3125 r/min (YFM70RSBH, YFM70RSSH)
Uncertainty of measurement:
3.0 dB(A) (YFM70RSBH, YFM70RSSH)
A-weighted sound power level: 97.0 dB(A) at 3125 r/min (YFM70RSBH, YFM70RSSH)
Uncertainty of measurement: 3.0 dB(A) (YFM70RSBH, YFM70RSSH) Vibration on seat (EN1032, ISO5008):
0.7 m/s² (YFM70RSBH, YFM70RSSH)
Uncertainty of measurement: 0.6 m/s² (YFM70RSBH, YFM70RSSH)
Vibration on handle (EN1032, ISO5008): 4.7 m/s² (YFM70RSBH, YFM70RSSH)
Uncertainty of measurement:
0.5 m/s² (YFM70RSBH, YFM70RSSH)
Engine:Engine type:Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
Single cylinder
Displacement: 686 cm³
Bore × stroke:
102.0 × 84.0 mm (4.02 × 3.31 in)
Compression ratio:
10.0 : 1
Starting system: Electric starter
Lubrication system: Dry sumpEngine oil:Recommended brand:YAMALUBE
U2LS62E0.book Page 1 Thursday, February 25, 2016 8:44 AM
12-1
12
INDEX
AAccessories and loading ................................................ 6-6
Air filter element, cleaning ............................................ 8-21BBattery .......................................................................... 8-45
Brake and clutch levers, checking and lubricating ...... 8-41
Brake fluid, changing ...................................................8-33
Brake fluid level, checking ........................................... 8-31
Brake lever ..................................................................... 4-6
Brake lever free play, checking the front ..................... 8-33
Brake light switches ..................................................... 8-36
Brake pads, checking the front and rear ..................... 8-29
Brake pedal .................................................................... 4-7
Brake pedal, checking and lubricating ........................ 8-41
Brake pedal height, checking ...................................... 8-34
Brakes .......................................................................... 8-29
Brakes, front and rear .................................................... 5-4CCables, checking and lubricating ................................. 8-40
Chassis fasteners ........................................................... 5-7
Cleaning ......................................................................... 9-1
Clutch lever .................................................................... 4-6
Clutch lever free play, adjusting ................................... 8-36
Coolant ................................................................. 5-4, 8-17
Coolant temperature warning light ................................. 4-2DDrive chain ..................................................................... 5-5
Drive chain, lubricating ................................................ 8-40
Drive chain slack .......................................................... 8-38
EEngine break-in .............................................................. 6-5
Engine idling speed ...................................................... 8-27
Engine oil ....................................................................... 5-4
Engine oil and oil filter element .................................... 8-13
Engine, start ................................................................... 6-1
Engine stop switch ......................................................... 4-4
Engine trouble warning light .......................................... 4-3FFuel ...................................................................... 4-10, 5-4
Fuel level warning light ................................................... 4-3
Fuel tank cap ............................................................... 4-10
Fuses, replacing ........................................................... 8-48HHandlebar switches ....................................................... 4-4
Headlight beam, adjusting ........................................... 8-51
Headlight bulb, replacing ............................................. 8-50IIdentification numbers ................................................. 11-1
Indicator lights and warning lights ................................. 4-2
Instruments, lights and switches ................................... 5-8LLabel locations ............................................................... 1-1
Light switch .................................................................... 4-4MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................ 8-5
Maintenance chart, emission control system ................ 8-3
Model label .................................................................. 11-1
U2LS62E0.book Page 1 Thursday, February 25, 2016 8:44 AM