radiator cap YAMAHA YFZ450 2013 Owners Manual

3-1
3
EBU17680
DESCRIPTION
EBU17690Left view
EBU17700Right view
1. Headlights
2. Fuel cock
3. Starter (choke)
4. Fuse
5. Tail/brake light
6. Coolant reservoir
7. Shift pedal
8. Engine oil tank
123 45
6
7
8
1. Spark arrester
2. Seat
3. Fuel tank cap
4. Radiator cap
5. Oil filter element
6. Brake pedal1
23
4
5
6
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8-21
8
are harmful to the engine. If water has
been used instead of coolant, replace it
with coolant as soon as possible, other-
wise 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,
otherwise the effectiveness of the coolant
will be reduced.
[ECB01011]
TIP●The radiator fan is automatically switched on or
off according to the coolant temperature in the
radiator.●If the engine overheats, see page 8-58 for fur-
ther instructions.
EBU23564To 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 pressure
to escape before completely removing the cap.1. Place the ATV on a level surface.
2. Remove panel A. (See page 8-9.)
3. Place a container under the engine, and then remove the coolant drain bolt and its gasket.
(Use a trough or a similar object as shown.)
Coolant reservoir capacity (up to the maxi-
mum level mark):
0.29 L (0.31 US qt, 0.26 Imp.qt)
U1PD61E0.book Page 21 Tuesday, February 14, 2012 10:06 AM

8-22
84. Remove the radiator cap. 5. Remove the coolant reservoir by removing the
bolts.
6. Remove the coolant reservoir cap, and then turn the coolant reservoir upside down to
empty it.
1. Coolant drain bolt
2. Gasket
3. Trough
3
2
1
1. Radiator cap
1
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8-23
8
7. After draining the coolant, thoroughly flush the
cooling system with clean tap water.
8. Install the coolant reservoir by installing the bolts.
9. Install the coolant drain bolt and its new gas- ket, and then tighten the bolt to the specified
torque. 10. Pour the recommended coolant into the reser-
voir to the maximum level mark, and then in-
stall the reservoir cap. NOTICE: Mix
antifreeze with distilled water only. Howev-
er, 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.
[ECB00991]
11. Pour the recommended coolant into the radia- tor until it is full.
12. Install the radiator cap, start the engine, let it idle for several minutes, and then turn it off.
1. Coolant reservoir cap
2. Coolant reservoir
3. BoltTightening torque:Coolant drain bolt:10 Nm (1.0 m·kgf, 7.2 ft·lbf)
1
3
2
Antifreeze/water mixture ratio:1:1
Recommended antifreeze: High-quality ethylene glycol antifreeze con-
taining corrosion inhibitors for aluminum en-
gines
Coolant quantity: Radiator capacity (including all routes):1.30 L (1.37 US qt, 1.14 Imp.qt)
Coolant reservoir capacity (up to the maxi-
mum level mark): 0.29 L (0.31 US qt, 0.26 Imp.qt)
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8-24
813. 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.EBU23707Cleaning the air filter element The 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
riding 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.
2. Remove the seat. (See page 4-12.)
3. Remove the air filter case cover by unhookingthe holders.1. Air filter case check hose
1
U1PD61E0.book Page 24 Tuesday, February 14, 2012 10:06 AM

8-58
8Engine 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.TIPIf 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 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.
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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)
Quantity in oil tank: 1.55 L (1.64 US qt, 1.36 Imp.qt)
Quantity in crankcase: 0.20 L (0.21 US qt, 0.18 Imp.qt)
With oil filter element replacement:
1.85 L (1.96 US qt, 1.63 Imp.qt)
Quantity in oil tank: 1.55 L (1.64 US qt, 1.36 Imp.qt) Quantity in crankcase:
0.30 L (0.32 US qt, 0.26 Imp.qt)
Cooling system:Coolant reservoir capacity (up to the maximum level mark):
0.29 L (0.31 US qt, 0.26 Imp.qt)
Radiator capacity (including all routes): 1.30 L (1.37 US qt, 1.14 Imp.qt)Air filter:Air filter element:
Wet elementFuel:Recommended fuel:Premium unleaded gasoline only
Fuel tank capacity:
10.0 L (2.64 US gal, 2.20 Imp.gal)
Fuel reserve amount: 1.9 L (0.50 US gal, 0.42 Imp.gal)Carburetor:Type × quantity:
BSR42 x 1Spark 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 system:Spur gear
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
U1PD61E0.book Page 2 Tuesday, February 14, 2012 10:06 AM