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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8
To install the spark plug
1. Clean the surface of the spark plug gasket and its mating surface, and then wipe off any
grime from the spark plug threads.
2. Install the spark plug with the spark plug wrench, and then tighten it to the specified
torque.
TIPIf a torque wrench is not available when installing
the spark plug, a good estimate of the correct
torque is 1/4–1/2 turn past finger tight. However,
the spark plug should be tightened to the speci-
fied torque as soon as possible. 3. Install the spark plug cap.
4. Install the panels.
EBU2746CEngine oil and oil filter cartridgeThe engine oil level should be checked before
each ride. In addition, the oil must be changed and
the oil filter cartridge replaced at the intervals
specified in the periodic maintenance and lubrica-
tion chart.
To check the engine oil level1. Park the ATV on a level surface.
2. Check the engine oil level on a cold engine.TIPIf the engine was started before checking the oil
level, warm up the engine, and then wait at least
10 minutes until the oil settles for an accurate
reading. 3. Remove the access cover by turning it coun- terclockwise.
Tightening torque:
Spark plug:13 N·m (1.3 kgf·m, 9.6 lb·ft)
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8
Make sure that no foreign material enters the
crankcase.
13. Start the engine, and then let it idle for several
minutes while checking it for oil leakage. If oil
is leaking, immediately turn the engine off and
check for the cause.
14. Turn the engine off, wait at least ten minutes, and then check the oil level and correct it if
necessary.
15. Install the access cover by turning it clock- wise.EBU27308Final gear oilThe final gear case must be checked for oil leak-
age before each ride. If any leakage is found, have
a Yamaha dealer check and repair the ATV. In ad-
dition, the final gear oil level must be checked and
the oil changed as follows at the intervals speci-
fied in the periodic maintenance and lubrication
chart.
To check the final gear oil level1. Park the ATV on a level surface. 2. Remove the final gear oil level check bolt and
its gasket, and then check the oil level in the
final gear case. The oil level should be at the
brim of the check hole.
3. If the oil is below the brim of the check hole, remove the final gear oil filler bolt and its gas-
ket, and then add sufficient oil of the recom-
mended type to raise it to the correct level.
1. Final gear oil
2. Gasket
3. Final gear oil level check bolt
4. Correct oil level
1
243
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8
Refill with the same type of brake fluid. Add-
ing a brake fluid other than DOT 4 may result
in a harmful chemical reaction.
Be careful that water does not enter the
brake fluid reservoir when refilling. Water will
significantly lower the boiling point of the flu-
id and may result in vapor lock.
EBU24283Changing the brake fluidHave a Yamaha dealer change the brake fluid at
the intervals specified in the periodic maintenance
and lubrication chart. In addition, have the oil seals
of the brake master cylinder and calipers as well
as the brake hoses replaced at the intervals listed
below or whenever they are damaged or leaking.
Oil seals: Replace every two years.
Brake hoses: Replace every four years.
EBU24396Checking the front brake lever free
playThere should be no free play at the brake lever
end. If there is free play, have a Yamaha dealer in-
spect the brake system.EBU34245Adjusting the rear brake lever and
brake pedal free playThe rear brake lever and brake pedal free play
must be checked and, if necessary, adjusted at
the intervals specified in the periodic maintenance
and lubrication chart.1. No brake lever free play
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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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