Page 111 of 160
8-19
8
TIPThe radiator fan is automatically switched on or
off according to the coolant temperature in the
radiator.
If the engine overheats, see page 8-55 for fur-
ther instructions.
EBU23545To change the coolant
WARNING
EWB01891Wait for the engine and radiator to cool before
removing the radiator cap. You could be
burned by hot fluid and steam blown out under
pressure. Always place a thick rag over the cap
when opening. Allow any remaining pressure
to escape before completely removing the cap. 1. Place the ATV on a level surface.
2. Remove panel A. (See page 8-10.)
3. Place a container under the engine, and then
remove the coolant drain bolt and its gasket.
1. Coolant reservoir capCoolant reservoir capacity (up to the maxi-
mum level mark):0.25 L (0.26 US qt, 0.22 Imp.qt)
1
U2LS62E0.book Page 19 Thursday, February 25, 2016 8:44 AM
Page 112 of 160
8-20
84. Remove the radiator cap. 5. Remove the coolant reservoir cap.
6. Disconnect the coolant reservoir hose on the
coolant reservoir side, and then drain the
coolant from the coolant reservoir.
7. After draining the coolant, thoroughly flush the cooling system with clean tap water.
8. Install the coolant drain bolt and its new gas- ket, and then tighten the bolt to the specified
torque.
1. Coolant drain bolt
2. Gasket
1. Radiator cap
1
2
1
1. Coolant reservoir cap
2. Coolant reservoir hoseTightening torque:Coolant drain bolt:11 N·m (1.1 kgf·m, 8.0 lb·ft)
1
2
U2LS62E0.book Page 20 Thursday, February 25, 2016 8:44 AM
Page 113 of 160

8-21
8
9. Connect the coolant reservoir hose.
10. Pour the recommended coolant into the res- ervoir to the maximum level mark, and then
install the reservoir cap. NOTICE: Mix anti-
freeze with distilled water only. However, if
distilled water is not available, soft water
may be used for refilling. Do not use hard
water or salt water since they are harmful
to the engine.
[ECB00992]
11. Pour the recommended coolant into the radi- ator until it is full.
12. Install the radiator cap, start the engine, let it idle for several minutes, and then turn it off. 13. Remove the radiator cap to check the coolant
level in the radiator. If it is low, add sufficient
coolant until it reaches the top of the radiator,
and then install the radiator cap.
14. Start the engine, and then check for coolant leakage.
TIPIf any leakage is found, have a Yamaha dealer
check the cooling system. 15. Install the panel.EBU26808Cleaning the air filter elementThe air filter element should be cleaned at the in-
tervals specified in the periodic maintenance and
lubrication chart. Clean or, if necessary, replace
the air filter element more frequently if you are rid-
ing in unusually wet or dusty areas.TIPThere is a check hose at the bottom of the air filter
case. If dust or water collects in this hose, empty
the hose and clean the air filter element and air fil-
ter case.
Antifreeze/water mixture ratio:1:1
Recommended antifreeze: High-quality ethylene glycol antifreeze con-
taining corrosion inhibitors for aluminum
engines
Coolant quantity: Radiator (including all routes):1.68 L (1.78 US qt, 1.48 Imp.qt)
Coolant reservoir (up to the maximum level
mark): 0.25 L (0.26 US qt, 0.22 Imp.qt)
U2LS62E0.book Page 21 Thursday, February 25, 2016 8:44 AM
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8-49
8
If a fuse is blown, replace it as follows. 1. Turn the key to “ ” (off) and turn off all elec- trical circuits.
NOTICEECB00641To prevent accidental short-circuiting, turn off
the main switch when checking or replacing a
fuse.
2. Remove the blown fuse, and then install anew fuse of the specified amperage.
WARNING! Always use a fuse of the spec- ified rating, and never use a substitute ob-
ject in place of the proper fuse. An
improper fuse or a substitute object can
cause damage to the electrical system,
which could lead to a fire.
[EWB02173]
3. Turn the key to “ ” (on) and turn on the elec- trical circuits to check if the devices operate.
4. If the fuse immediately blows again, have a Yamaha dealer check the electrical system.
1. Fuel injection system fuse
2. Radiator fan motor fuse
3. Ignition fuse
4. Signaling system fuse
5. Headlight fuse
6. Spare fuse
1
2
3
45
6
Specified fuses:
Main fuse:30.0 A
Headlight fuse: 10.0 A
Ignition fuse: 10.0 A
Signaling system fuse: 10.0 A
Radiator fan motor fuse: 20.0 A
Fuel injection system fuse: 10.0 A
U2LS62E0.book Page 49 Thursday, February 25, 2016 8:44 AM
Page 147 of 160
8-55
8
Engine overheating
WARNING
EWB02291Wait for the engine and radiator to cool before removing the radiator cap. You could be burned by
hot fluid and steam blown out under pressure. Always put a thick rag over the cap when opening.
Allow any remaining pressure to escape before completely removing the cap. TIPIf coolant is not available, tap water can be temporarily used instead, provided that it is changed to the
recommended coolant as soon as possible. Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer check
and repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again, have a
Yamaha dealer check and repair the cooling system.
There is
leakage.
There is
no leakage.
U2LS62E0.book Page 55 Thursday, February 25, 2016 8:44 AM
Page 152 of 160

10-2
10
Type:SAE 5W-30, 10W-30, 10W-40, 15W-40, 20W-40 or 20W-
50
Recommended engine oil grade: API service SG type or higher, JASO standard MA
Engine 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)Coolant quantity:Coolant reservoir (up to the maximum level mark):0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator (including all routes): 1.68 L (1.78 US qt, 1.48 Imp.qt)Air filter:Air filter element:Wet element
Fuel:Recommended fuel:Regular unleaded gasoline only
Fuel tank capacity:
11.0 L (2.90 US gal, 2.42 Imp.gal)
Fuel reserve amount: 2.9 L (0.77 US gal, 0.64 Imp.gal)Fuel injection:Throttle body:
ID mark: 1S3H 10Spark plug (s):Manufacturer/model:NGK/CR8E
Spark plug gap: 0.7–0.8 mm (0.028–0.031 in)Clutch:Clutch type:Wet, multiple-discTransmission:Primary reduction ratio:
77/34 (2.265)
Secondary reduction system: Chain drive
Secondary reduction ratio: 38/14 (2.714)
Transmission type:
Constant mesh 5-speed forward, 1-speed reverse
Operation: Left foot operation
0 10 30 50 70 90 110 130 F
–20 –10 0 10 20 30 40 50 CSAE 5W-30
SAE 10W-30
SAE 10W-40
SAE 15W-40
SAE 20W-40SAE 20W-50
U2LS62E0.book Page 2 Thursday, February 25, 2016 8:44 AM
Page 155 of 160
10-5
10
Signaling system fuse:10.0 A
Ignition fuse: 10.0 A
Radiator fan motor fuse:
20.0 AEBU30402For Europe only
The figures quoted are emission levels and are not
necessarily safe working levels. Whilst there is a
correlation between the emission and exposure
levels, this cannot be used reliably to determine
whether or not further precautions are required.
Factors that influence the actual level of exposure
of work-force include the characteristics of the
work room, the other sources of noise, etc. i.e. the
number of machines and other adjacent process-
es, and the length of time for which an operator is
exposed to the noise. Also the permissible expo-
sure level can vary from country. This information,
however, will enable the user of the machine to
make a better evaluation of the hazard and risk.U2LS62E0.book Page 5 Thursday, February 25, 2016 8:44 AM