Page 9 of 150

Operating the reverse knob and driving in reverse ...................................................... 7-4
Engine break-in ........................................... 7-5
Parking ........................................................ 7-5
Parking on a slope ...................................... 7-6
Accessories and loading ............................. 7-6
RIDING YOUR ATV ........................................ 8-1 GETTING TO KNOW YOUR ATV ................ 8-2
RIDE WITH CARE AND GOOD JUDGMENT .............................................. 8-2
BE CAREFUL WHERE YOU RIDE ............... 8-8
TURNING YOUR ATV................................ 8-11
CLIMBING UPHILL ................................... 8-13
RIDING DOWNHILL .................................. 8-16
CROSSING A SLOPE................................ 8-17
CROSSING THROUGH SHALLOW WATER .................................................... 8-18
RIDING OVER ROUGH TERRAIN ............. 8-20
SLIDING AND SKIDDING.......................... 8-20
WHAT TO DO IF... ..................................... 8-21
PERIODIC MAINTENANCE AND
ADJUSTMENT................................................ 9-1 Owner’s Manual and tool kit ....................... 9-2
Periodic maintenance chart: Emission control system .......................................... 9-3 Periodic maintenance chart: General
maintenance and lubrication .................... 9-5
Removing and installing the panel............ 9-10
Checking the spark plug........................... 9-10
Engine oil and oil filter element................. 9-12
Why Yamalube ......................................... 9-17
Coolant ..................................................... 9-18
Cleaning the air filter element ................... 9-21
Cleaning the spark arrester ...................... 9-25
Adjusting the engine idling speed ............ 9-27
Adjusting the throttle lever free play ......... 9-28
Valve clearance......................................... 9-29
Adjusting the reverse lock release cable ....................................................... 9-29
Brakes....................................................... 9-29
Checking the front and rear brake pads... 9-29
Checking the brake fluid level .................. 9-30
Changing the brake fluid .......................... 9-33
Checking the front brake lever free play... 9-33
Checking the brake pedal height.............. 9-34
Adjusting the parking brake free play ....... 9-34
Brake light switches ................................. 9-36
Adjusting the clutch lever free play .......... 9-36
Drive chain slack....................................... 9-38
Lubricating the drive chain ....................... 9-40
Checking and lubricating the cables ........ 9-40
UBCX61E0.book Page 2 Friday, January 22, 2021 1:54 PM
Page 24 of 150
4-1
4
EBU17681
DESCRIPTION
EBU17691Left view
EBU17701Right view
1. Engine oil tank
2. Coolant reservoir
3. Fuel tank cap
4. Idle adjusting screw
5. Battery
6. Fuses
7. Rear shock absorber
8. Drive chain
9. Footrest
10.Shift pedal
12
4
3
659
10
7
8
1. Muffler
2. Spark arrester
3. Air filter
4. Rear brake fluid reservoir
5. Crankcase engine oil filler bolt
6. Oil filter element
7. Spark plug
8. Front shock absorber
9. Crankcase engine oil drain bolt
10.Brake pedal
11.Footrest
12.Rear brake light switch
21
34
5678
109
11
12
UBCX61E0.book Page 1 Friday, January 22, 2021 1:54 PM
Page 90 of 150

9-7
9
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 mounts • 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 month 1
36612
km (mi) 240
(150) 1
300
(800) 2500
(1600) 2500
(1600) 5000
( 3 200)
hours 20 80 160 160 320UBCX61E0.book Page 7 Friday, January 22, 2021 1:54 PM
Page 95 of 150

9-12
9
2. Check the spark plug for electrode erosion
and excessive carbon or other deposits, and
replace it if necessary.
3. Measure the spark plug gap with a wire thick- ness gauge and, if necessary, adjust the gap
to specification. 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.EBU2678DEngine 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 chart.
Specified spark plug:
NGK/CR8E
1. Spark plug gapSpark plug gap:0.7–0.8 mm (0.028–0.031 in)
Tightening torque:Spark plug:13 N·m (1.3 kgf·m, 9.6 lb·ft)
UBCX61E0.book Page 12 Friday, January 22, 2021 1:54 PM
Page 98 of 150
9-15
95. 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
UBCX61E0.book Page 15 Friday, January 22, 2021 1:54 PM
Page 99 of 150
9-16
9
8. 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
Page 100 of 150

9-17
914. 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. Check the O-ring for damage, and replace it if necessary.
16. 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.
17. 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.
18. Turn the engine off, and then check the oil level and correct it if necessary.EBU38620Why YamalubeYAMALUBE oil is a Genuine YAMAHA Part born ofthe engineers’ passion and belief that engine oil is
an important liquid engine component. We form
teams of specialists in the fields of mechanical en-
gineering, chemistry, electronics and track test-
ing, and have them develop the engine together
with the oil it will use. Yamalube oils take full ad-
vantage of the base oil’s qualities and blend in the
ideal balance of additives to make sure the final oil
clears our performance standards. Thus,
Yamalube mineral, semi synthetic and synthetic
Recommended oil:
See page 11-1.
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)
UBCX61E0.book Page 17 Friday, January 22, 2021 1:54 PM
Page 107 of 150
9-24
9
10. 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
UBCX61E0.book Page 24 Friday, January 22, 2021 1:54 PM