Page 10 of 178

Throttle lever ............................................... 5-4
Tires ............................................................ 5-4
Chassis fasteners ........................................ 5-7
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 ........................................................ 6-5
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 for the emission control system ........................... 8-3
General maintenance and lubrication chart.......................................................... 8-5
Removing and installing panels .................. 8-9
Checking the spark plug........................... 8-17
Engine oil and oil filter cartridge ............... 8-20
Final gear oil ............................................. 8-24
Differential gear oil .................................... 8-27
Coolant ..................................................... 8-29
Cleaning the air filter element ................... 8-37
Cleaning the spark arrester ...................... 8-39
V-belt case drain plug............................... 8-41
Adjusting the throttle lever free play ......... 8-41
Valve clearance......................................... 8-42
Brakes....................................................... 8-42
Checking the front brake pads and rear brake friction plates ................................ 8-42
Checking the brake fluid level .................. 8-44
Changing the brake fluid .......................... 8-45
Checking the front brake lever free play... 8-45
UB1661E0.book Page 2 Thursday, May 12, 2016 2:47 PM
Page 30 of 178
3-1
3
EBU17681
DESCRIPTION
EBU17691Left view
EBU17701Right view
1. Radiator cap
2. Battery
3. Fuses
4. Air filter case
5. Spark arrester
6. Rear brake light switch
7. Engine oil dipstick
8. Oil filter cartridge
9. Coolant reservoir
5
1
2,3
47
8
6
9
1. Rear shock absorber assembly spring preload adjusting ring (YFM70KPXH / YFM70KPHH / YFM70KPSH /
YFM70KPAH)
2. Fuel tank cap
3. Owner’s tool kit
4. Storage compartment
5. Spark plug
6. Front shock absorber assembly spring preload adjusting ring (YFM70KPXH / YFM70KPHH / YFM70KPSH /
YFM70KPAH)
7. Brake pedal
8. V-belt case drain plug
5
1
6
23
4
78
UB1661E0.book Page 1 Thursday, May 12, 2016 2:47 PM
Page 103 of 178

8-7
8
14*Steering shaft • Lubricate with lithium-soap-based grease. √√√
15 *Steering system • Check operation and repair or replace if dam-
aged.
• Check toe-in and adjust if necessary. √√√√√
16 *Engine mount • Check for cracks or other damage, and replace if
necessary. √√√
17 *Axle boots • Check for cracks or other damage, and replace if
necessary. √√√√√
18 Engine oil • Change.
• Check ATV for oil leakage, and correct if neces-
sary. √ √√√
19 Engine oil filter car-
tridge • Replace.
√√√
20 Differential gear oil • Change.
• Check ATV for oil leakage, and correct if neces-
sary. √√
21 Final gear oil • Change.
• Check ATV for oil leakage, and correct if neces-
sary. √ √√√
22 Cooling system • Check coolant level and ATV for coolant leakage,
and correct if necessary. √√√√√
• Replace coolant. Every 2 years
NO.
ITEM CHECK OR MAINTENANCE
JOB INITIAL
EVERY
Whichev- er comes first month136612
km (mi) 320
(200) 1300
(800) 2500
(1600) 2500
(1600) 5000
(3200)
hours 20 80 160 160 320UB1661E0.book Page 7 Thursday, May 12, 2016 2:47 PM
Page 116 of 178
8-20
8
EBU27469Engine 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. Place 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, be sure to warm up the engine sufficiently,
and then wait at least 10 minutes until the oil set-
tles for an accurate reading. 3. Remove the access cover by turning it coun- terclockwise. 4. Remove the engine oil dipstick, and then
wipe it off with a clean rag.
1. Access cover
1. Engine oil dipstick
1
UB1661E0.book Page 20 Thursday, May 12, 2016 2:47 PM
Page 118 of 178
8-22
8
TIPSkip steps 6–10 if the oil filter cartridge is not be-
ing replaced. 6. Remove panel F. (See page 8-9.)
7. Remove the oil filter cartridge with an oil filterwrench.
TIPAn oil filter wrench is available at a nearby Yamaha
dealer. 8. Apply a thin coat of engine oil to the O-ring ofthe new oil filter cartridge.
1. Engine oil drain bolt
2. Gasket
12
1. Oil filter cartridge
2. Oil filter wrench
1
2
UB1661E0.book Page 22 Thursday, May 12, 2016 2:47 PM
Page 119 of 178
8-23
8
TIPMake sure that the O-ring is properly seated. 9. Install the new oil filter cartridge with an oil fil-ter wrench, and then tighten it to the specified
torque with a torque wrench. 10. Install panel F.
11. Install the engine oil drain bolt and its new
gasket, and then tighten the bolt to the spec-
ified torque.1. O-ring
1. Torque wrenchTightening torque:Oil filter cartridge:15 N·m (1.5 kgf·m, 11 lb·ft)
Tightening torque: Engine oil drain bolt:22 N·m (2.2 kgf·m, 16 lb·ft)
1
UB1661E0.book Page 23 Thursday, May 12, 2016 2:47 PM
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8-24
812. Refill with the specified amount of the recom-
mended engine oil, and then insert the dip-
stick completely into the oil filler hole.
TIPBe sure to wipe off spilled oil on any parts after the
engine and exhaust system have cooled down. NOTICEECB00301In order to prevent clutch slippage (since the
engine oil also lubricates the clutch), do not
mix any chemical additives. Do not use oils
with a diesel specification of “CD” or oils of
a higher quality than specified. In addition,
do not use oils labeled “ENERGY CONSERV-
ING II” or higher.
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.EBU27307Final 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. Place the ATV on a level surface.
Recommended oil:
See page 10-1.
Oil quantity: Without oil filter cartridge replacement:2.00 L (2.11 US qt, 1.76 Imp.qt)
With oil filter cartridge replacement: 2.10 L (2.22 US qt, 1.85 Imp.qt)
UB1661E0.book Page 24 Thursday, May 12, 2016 2:47 PM
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8-39
8
8. Check the sponge material and replace it if
damaged.
9. Apply Yamaha foam air filter oil or other qual- ity foam air filter oil to the sponge material.
TIPThe sponge material should be wet but not drip-
ping. 10. Pull the sponge material over the air filter ele- ment frame, and then install the lock plate.
11. Insert the air filter element into the air filter case, and then install the air filter case cover
by hooking the holders onto the air filter case.
NOTICE: Make sure that the air filter ele-
ment is properly seated in the air filter case. Never operate the engine with the air
filter element removed. Doing so would al-
low unfiltered air to enter the engine, caus-
ing rapid engine wear and possible engine
damage. Additionally, the fuel injection
system would be affected resulting in poor
engine performance and possible over-
heating.
[ECB00763]
12. Install the seat.TIPThe air filter element should be cleaned every 20–
40 hours. It should be cleaned and lubricated
more often if the ATV is operated in extremely
dusty areas. Each time the air filter element main-
tenance is performed, check the air inlet of the air
filter case for obstructions. Check the air filter
case rubber joint to the throttle body and the rub-
ber joint manifold fittings for an air-tight seal.
Tighten all fittings securely to avoid the possibility
of unfiltered air entering the engine. EBU28904Cleaning the spark arresterBe sure the exhaust pipe and muffler are cool be-
fore cleaning the spark arrester.
1. Remove the tailpipe bolts.
UB1661E0.book Page 39 Thursday, May 12, 2016 2:47 PM