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8-32
8
CAUTION:ECB00401If coolant is not available, use distilled water
or soft tap water instead. Do not use hard wa-
ter or salt water since it is harmful to the en-
gine.If water has been used instead of coolant, re-
place it with coolant as soon as possible,
otherwise the cooling system will not be pro-
tected against frost and corrosion.If water has been added to the coolant, have
a Yamaha dealer check the antifreeze con-
tent of the coolant as soon as possible, oth-
erwise the effectiveness of the coolant willbe reduced.
NOTE:The radiator fan is automatically switched on or
off according to the coolant temperature in the
radiator.If the engine overheats, see page 8-65 for fur-ther instructions.
EBU27761To change the coolant
WARNING
EWB01890Wait 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 pressureto escape before completely removing the cap.
1. Place the ATV on a level surface.
2. Remove panels D and F. (See page 8-8.)
3. Place a container under the engine, and then
remove the coolant drain bolt. (Use a trough
or a similar object as shown to prevent coolant
from spilling on the engine guard.)
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8-36
8 18. When coolant begins to flow out of the bolt
hole, tighten the cylinder head air bleed bolt to
the specified torque.
19. Start the engine and let it idle for ten minutes.
20. Rev the engine five times.
21. Pour the recommended coolant into the radia-
tor until it is full.22. Stop the engine and allow it to cool. If the cool-
ant level has dropped after the engine has
cooled, add sufficient coolant until it reaches
the top of the radiator, and then install the ra-
diator cap.
23. Start the engine, and then check for coolant
leakage.
NOTE:If any leakage is found, have a Yamaha dealercheck the cooling system.
24. Install the V-belt cooling duct, and then tighten
the clamp screw.
25. Install the panels.EBU27800Cleaning the air filter element The air filter element should be cleaned at the in-
tervals specified in the periodic maintenance and
lubrication chart. Clean the air filter element more
frequently if you are riding in unusually wet or dusty
areas.NOTE:There are two check hoses at the bottom of the air
filter case, which are located behind panels D and
E. (See page 8-8 for an explanation on removing
1. Cylinder head air bleed boltTightening torque:
Cylinder head air bleed bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
U3B460E0.book Page 36 Friday, May 12, 2006 2:51 PM
Page 151 of 166
8-66
8 Engine overheating
WARNING
EWB02290Wait 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.NOTE:If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the rec-ommended 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 NOTE.)
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.
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10-2
10
Engine oil:Type:
SAE5W30 or SAE10W30 or SAE10W40 or SAE15W40
or SAE20W40 or SAE20W50
Recommended engine oil grade:
API service SE, SF, SG type or higher
Engine 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)Final gear oil:Type:
SAE80 API GL-4 Hypoid gear oil
Quantity:
0.20 L (0.21 US qt) (0.18 Imp.qt)
Differential gear oil:Type:
SAE80 API GL-4 Hypoid gear oil
Quantity:
0.22 L (0.23 US qt) (0.19 Imp.qt)Cooling system:Coolant reservoir capacity (up to the maximum level mark):
0.17 L (0.18 US qt) (0.15 Imp.qt)
Radiator capacity (including all routes):
1.99 L (2.10 US qt) (1.75 Imp.qt)Air filter:Air filter element:
Wet elementFuel:Recommended fuel:
Regular unleaded gasoline only (EUR)
Unleaded gasoline only (AUS)(NZL)
Fuel tank capacity:
20.0 L (5.28 US gal) (4.40 Imp.gal)
Fuel reserve amount:
4.5 L (1.19 US gal) (0.99 Imp.gal)Fuel injection:Model/quantity:
297500-1010/1
Manufacturer:
DENSOSpark plug (s):Manufacturer/model:
NGK/CR8E
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
-20˚ -10˚ 0˚
10˚20˚ 30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
U3B460E0.book Page 2 Friday, May 12, 2006 2:51 PM
Page 159 of 166
10-5
10
Reverse indicator light:
LED
Coolant temperature warning light:
LED
Engine trouble warning light:
LED
EPS warning light:
LED
Park indicator light:
LED
On-Command four-wheel-drive/differential gear lock
indicator:
LCD
High-range indicator light:
LED
Low-range indicator light:
LED
Differential gear lock indicator light:
LEDFuses:Main fuse:
40.0 A
Fuel injection system fuse:
15.0 A
EPS fuse:
40.0 A
Headlight fuse:
15.0 A
Signaling system fuse:
5.0 A
Ignition fuse:
10.0 AAuxiliary DC jack fuse:
15.0 A
Four-wheel-drive motor fuse:
10.0 A
Radiator fan fuse:
15.0 A
U3B460E0.book Page 5 Friday, May 12, 2006 2:51 PM
Page 163 of 166

INDEX
AAccessories and loading ................................................ 6-6
Accessories, auxiliary jack ........................................... 4-22
Air filter element, cleaning ............................................ 8-36
Axle boots .................................................................... 8-51BBattery .......................................................................... 8-55
Brake fluid, changing ................................................... 8-47
Brake fluid level, checking ........................................... 8-46
Brake hose protectors, checking the rear .................... 8-45
Brake lever, front .......................................................... 4-14
Brake levers, checking and lubricating ........................ 8-52
Brake pads, checking the front and rear ...................... 8-44
Brake pedal and rear brake lever ................................. 4-14
Brake pedal, checking and lubricating ......................... 8-53
Brake pedal free play and brake pedal position,
adjusting and checking .............................................. 8-49
Brakes, front and rear .................................................... 5-4CCables, checking and lubricating ................................. 8-51
Carrier, front ................................................................. 4-21
Carrier, rear .................................................................. 4-21
Chassis fasteners .......................................................... 5-7
Cleaning ......................................................................... 9-1
Coolant .................................................................. 5-3, 8-30
Coolant temperature warning light ................................. 4-2DDifferential gear lock indicator light ................................ 4-4Differential gear oil ................................................ 5-3, 8-28
Drive select lever ......................................................... 4-15
Drive select lever and driving in reverse ........................ 6-2
Drive select lever safety system cable, adjusting ........ 8-44
Drive shaft universal joint, lubricating .......................... 8-53
EEngine break-in .............................................................. 6-4
Engine idling speed ..................................................... 8-42
Engine oil ....................................................................... 5-3
Engine oil and oil filter cartridge ................................... 8-22
Engine stop switch ......................................................... 4-7
Engine trouble warning light .......................................... 4-3
EPS warning light .......................................................... 4-3FFinal gear oil ......................................................... 5-3, 8-26
Four-wheel-drive/differential gear lock indicator ............ 4-3
Front and rear brake lever free play, checking ............ 8-48
Fuel ....................................................................... 4-16, 5-3
Fuel tank cap ............................................................... 4-15
Fuses, replacing .......................................................... 8-56HHandlebar switches ....................................................... 4-7
Headlight beam, adjusting ........................................... 8-61
Headlight bulb, replacing ............................................. 8-58
High-range indicator light ............................................... 4-4
Horn switch .................................................................... 4-8IIdentification numbers .................................................. 11-1
U3B460E0.book Page 1 Friday, May 12, 2006 2:51 PM