Page 9 of 160

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
Page 27 of 160
3-2
3
EBU17701Right view1. Spark arrester
2. Air filter case
3. Rear brake fluid reservoir
4. Crankcase engine oil filler bolt
5. Oil filter element
6. Spark plug
7. Front shock absorber assembly compression damping force adjusting bolt (for fast compression damping)
(YFM70RSSH/YFM70RSXH)
8. Front shock absorber assembly compression damping force adjusting screw (for slow compression damping)
(YFM70RSSH/YFM70RSXH)
9. Front shock absorber assembly spring preload adjusting nut (YFM70RSSH/YFM70RSXH)
10.Front shock absorber assembly spring preload adjusting ring (YFM70RSBH)1
23
456 7,8,9
1312
14
10,11
11.Front shock absorber assembly rebound damping force adjusting screw (YFM70RSSH/YFM70RSXH)
12.Crankcase engine oil drain bolt
13.Brake pedal
14.Rear brake light switch
U2LS62E0.book Page 2 Thursday, February 25, 2016 8:44 AM
Page 99 of 160

8-7
8
14*Drive chain roller • Check for wear and replace if necessary. √√√
15 *Chassis fasteners • Make sure that all nuts, bolts, and screws are
properly tightened. √√√√√
16 *Shock absorber as-
semblies • Check operation and correct if necessary.
• Check for oil leakage and replace if necessary.
√√√
17 *Rear suspension re-
lay arm and con-
necting arm
pivoting points • Check operation and correct if necessary.
• Lubricate with lithium-soap-based grease.
√√√√
18 *Steering shaft • Lubricate with lithium-soap-based grease. √√√
19 *Steering system • Check operation and repair or replace if dam-
aged.
• Check toe-in and adjust if necessary. √√√√√
20 *Engine mount • Check for cracks or other damage, and replace if
necessary. √√√
21 Engine oil • Change.
• Check ATV for oil leakage, and correct if neces-
sary. √ √√√
22 Engine oil filter ele-
ment • Replace.
√√√
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 320U2LS62E0.book Page 7 Thursday, February 25, 2016 8:44 AM
Page 105 of 160

8-13
8
EBU26788Engine oil and oil filter elementThe engine oil level should be checked before
each ride. In addition, the oil must be changed and
the oil filter element replaced at the intervals spec-
ified in the periodic maintenance and lubrication
chart.
To check the engine oil level1. Place the ATV on a level surface.
2. Start the engine, warm it up until the engine oil has reached a normal temperature of 60
°C (140 °F), let it continue to idle for ten sec-
onds or more, and then turn the engine off.TIPTo achieve the proper engine oil temperature for
an accurate oil level reading, the engine must have
first completely cooled down, and then warmed
up again for several minutes to normal operating
temperature. 3. Remove the engine oil tank filler cap, andthen wipe the engine oil dipstick off with a
clean rag.
4. Insert the dipstick in the filler hole (without screwing it in), and then remove it again to
check the oil level.
TIPThe engine oil should be between the minimum
and maximum level marks. 5. If the engine oil is at or below the minimumlevel mark, add sufficient oil of the recom-
mended type through the engine oil tank filler
hole to raise it to the correct level. NOTICE:1. Engine oil tank
2. Engine oil tank filler cap
3. Engine oil dipstick
4. Maximum level mark
5. Minimum level mark
2
3
4
5 1
U2LS62E0.book Page 13 Thursday, February 25, 2016 8:44 AM
Page 107 of 160
8-15
8
5. Remove the engine oil tank filler cap, and
then remove the engine oil tank drain bolt and
its gasket.
TIPSkip steps 6–9 if the oil filter element is not being
replaced. 6. Remove the oil filter element cover by remov-ing the bolts. 7. Remove the oil filter element and the O-rings.1. Engine oil tank drain bolt
2. Gasket
12
1. Oil filter element cover
2. Bolt
2
1
U2LS62E0.book Page 15 Thursday, February 25, 2016 8:44 AM
Page 108 of 160

8-16
88. Install a new oil filter element and new O-
rings.
TIPMake sure that the O-rings are properly seated. 9. Install the oil filter element cover by installingthe bolts, and then tighten them to the speci-
fied torque. 10. Install the crankcase engine oil drain bolt, the
engine oil tank drain bolt and their new gas-
ket, and then tighten the bolts to the specified
torques.
11. Install the crankcase engine oil filler bolt and its new O-ring, and then tighten the oil filler
bolt to the specified torque.
12. Pour only 1.3 L (1.37 US qt, 1.14 Imp.qt) of the specified amount of the recommended
engine oil through the engine oil tank filler
hole, and then install and tighten the oil tank
filler cap.
13. Start the engine, rev it several times, and then turn it off.1. Oil filter element
2. O-ringTightening torque:Oil filter element cover bolt:10 N·m (1.0 kgf·m, 7.2 lb·ft)
1
2
2
Tightening torques: Crankcase engine oil drain bolt:23 N·m (2.3 kgf·m, 17 lb·ft)
Engine oil tank drain bolt: 19 N·m (1.9 kgf·m, 14 lb·ft)
Tightening torque: Crankcase engine oil filler bolt:12 N·m (1.2 kgf·m, 8.7 lb·ft)
U2LS62E0.book Page 16 Thursday, February 25, 2016 8:44 AM
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8-17
8
14. Remove the engine oil tank filler cap, and
then gradually fill the oil tank with the remain-
ing oil quantity while regularly checking the oil
level on the dipstick.
15. Install and tighten the engine oil tank filler cap.
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.
16. 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.
17. Turn the engine off, and then check the oil level and correct it if necessary.EBU23471CoolantThe coolant level should be checked before each
ride. In addition, the coolant must be changed at
the intervals specified in the periodic maintenance
and lubrication chart.EBU27945To check the coolant level1. Place the ATV on a level surface.
Recommended oil:
See page 10-1.
Oil quantity: Without oil filter element replacement:1.75 L (1.85 US qt, 1.54 Imp.qt)
With oil filter element replacement: 1.85 L (1.96 US qt, 1.63 Imp.qt)
U2LS62E0.book Page 17 Thursday, February 25, 2016 8:44 AM
Page 116 of 160
8-24
810. Check the sponge material and replace it if
damaged.
11. 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. 12. Pull the sponge material over the air filter ele-ment frame.
13. Apply all-purpose grease to the air filter ele- ment seat. 14. Install the washer onto the air filter element
frame, and then insert the wing bolt into the
hole in the air filter element frame. NOTICE:
Be sure to install the washer with its
curved side facing outward as shown.
[ECB00454]
1. Air filter element seat
1
U2LS62E0.book Page 24 Thursday, February 25, 2016 8:44 AM