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8-33
8
5. Remove the radiator cap. 6. Remove the coolant reservoir cap.
7. Disconnect the coolant reservoir hose on the
coolant reservoir side, and then drain the
coolant from the coolant reservoir.
1. Coolant drain bolt
2. Gasket
1. Trough
1
2
1
1. Radiator cap
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8-34
88. After draining the coolant, thoroughly flush
the cooling system with clean tap water.
9. Install the coolant drain bolt and its new gas- ket, and then tighten the bolt to the specified
torque.
10. Connect the coolant reservoir hose.
11. Pour the recommended coolant into the radi- ator until it is full. 12. 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]
13. Loosen the water pump air bleed bolt, with- out removing it, to allow all of the air to es-
cape from the air bleed bolt hole.
1. Coolant reservoir hoseTightening torque:Coolant drain bolt:8 Nm (0.8 m·kgf, 5.8 ft·lbf)
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):1.76 L (1.86 US qt, 1.55 Imp.qt)
Coolant reservoir (up to the maximum level
mark): 0.25 L (0.26 US qt, 0.22 Imp.qt)
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8-35
8
14. When coolant begins to flow out of the bolt
hole, tighten the water pump air bleed bolt to
the specified torque.
15. Remove panel E. (See page 8-10.)
16. Loosen the cylinder head air bleed bolt, with- out removing it, to allow all of the air to es-
cape from the air bleed bolt hole. 17. When coolant begins to flow out of the bolt
hole, tighten the cylinder head air bleed bolt
to the specified torque.
18. Start the engine and let it idle for ten minutes.
19. Rev the engine five times.
20. Pour additional coolant into the radiator until it is full.
1. Water pump air bleed boltTightening torque:Water pump air bleed bolt:8 Nm (0.8 m·kgf, 5.8 ft·lbf)
1
1. Cylinder head air bleed boltTightening torque: Cylinder head air bleed bolt:10 Nm (1.0 m·kgf, 7.2 ft·lbf)
1
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8-36
821. Stop the engine and allow it to cool. If the
coolant level has dropped after the engine
has cooled, add sufficient coolant until it
reaches the top of the radiator, and then in-
stall the radiator cap.
22. Start the engine, and then check for coolant leakage.
TIPIf any leakage is found, have a Yamaha dealer
check the cooling system. 23. Install the footboard by installing the boltsand nuts, and then tighten them to the speci-
fied torques.
TIPTighten footboard bolts B in the order shown. 1. Footboard nut
2. Footboard bolt A
3. Footboard bolt B
3
1
2
1
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8-37
8
24. Install the panels.
EBU34230Cleaning 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. 1. Place the ATV on a level surface.
Tightening torques:
Footboard nut:4.0 Nm (0.40 m·kgf, 2.9 ft·lbf)
Footboard bolt A: 4.0 Nm (0.40 m·kgf, 2.9 ft·lbf)
Footboard bolt B: 8 Nm (0.8 m·kgf, 5.8 ft·lbf)
4
1
2
3
1. Air filter case check hose
1
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8-38
82. Remove the seat. (See page 4-20.)
3. Remove the air filter case cover by unhooking
the air filter case cover holders.
4. Pull the air filter element out of the air filter case. 5. Pull off the air filter element lock plate, and
then remove the sponge material from the air
filter element frame.
1. Air filter case cover holder
2. Air filter case cover
1 2
1
1. Air filter element
1
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8-39
8
6. Wash the sponge material gently but thor-
oughly in solvent. WARNING! Always use
parts cleaning solvent to clean the sponge
material. Never use low-flash-point sol-
vents or gasoline to clean the sponge ma-
terial because the engine could catch fire
or explode.
[EWB01942]
7. Squeeze the excess solvent out of the sponge material and let it dry. NOTICE: Do
not twist the sponge material when
squeezing it.
[ECB00442]
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
1. Air filter element frame
2. Sponge material
3. Air filter element lock plate
3
2
1
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8-40
8case. 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. 2. Remove the tailpipe by pulling it out of the
muffler, and then remove the gasket.
3. Tap the tailpipe lightly, and then use a wire brush to remove any carbon deposits from
the spark arrester portion of the tailpipe and
inside of the tailpipe housing.
1. Tailpipe bolt
1
1
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