2013 YAMAHA YFZ450 drain bolt

8-16
8Be sure the engine oil is at the correct lev-
el, otherwise engine damage may result.
[ECB00851]
TIPWhen adding oil, be careful not to overfill the en-
gine oil tank; the oil level rises faster starting from
the half-level-portion on the dipstick.6. Insert the dipstick into the engine oil tank filler
hole, and then tighten the engine oil tank filler
cap. NOTICE: Make sure that the engine oil
tank filler cap is securely tightened; other-
wise, oil may seep out when the engine is
running.
[ECB00362]
To change the engine oil (with or without oil fil-
ter element replacement) 1. Place the ATV on a level surface.
2. Remove the engine guard by removing the bolts. 3. Start the engine, warm it up for several min-
utes, and then turn it off.
4. Place an oil pan under the engine to collect the used oil.
5. Remove the crankcase engine oil filler cap, and the crankcase engine oil drain bolt and its
gasket.
1. Engine guard
2. Bolt
1
2
U1PD61E0.book Page 16 Tuesday, February 14, 2012 10:06 AM

8-17
8
6. Remove the engine oil tank filler cap, and the
engine oil tank drain bolt and its gasket.
TIPSkip steps 7–10 if the oil filter element is not being
replaced.7. Remove the oil filter element cover by remov-ing the bolts.
1. Crankcase engine oil drain bolt
2. Gasket
2
1
1. Engine oil tank drain bolt
2. Gasket
12
U1PD61E0.book Page 17 Tuesday, February 14, 2012 10:06 AM

8-18
88. Remove the oil filter element and the O-rings. 9. Install a new oil filter element and new O-
rings.
TIPMake sure that the O-rings are properly seated.10. Install the oil filter element cover by installing the bolts, and then tighten them to the speci-
fied torque.
11. Install the crankcase engine oil drain bolt, the engine oil tank drain bolt and their new gasket,
and then tighten the bolts to the specified
torques.
1. Oil filter element cover
2. Bolt
1. Oil filter element
2. O-ring
1
21
2
2
Tightening torque:
Oil filter element cover bolt:10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Tightening torques: Crankcase engine oil drain bolt:20 Nm (2.0 m·kgf, 14 ft·lbf)
Engine oil tank drain bolt: 19 Nm (1.9 m·kgf, 14 ft·lbf)
U1PD61E0.book Page 18 Tuesday, February 14, 2012 10:06 AM

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
U1PD61E0.book Page 22 Tuesday, February 14, 2012 10:06 AM

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)
U1PD61E0.book Page 23 Tuesday, February 14, 2012 10:06 AM

9-2
9
EBU25933Storage Short-term
Always store your ATV in a cool, dry place and, if
necessary, protect it against dust with a porous
cover. NOTICE: Storing the ATV in a poorly ven-
tilated room or covering it with a tarp while it is
still wet, will allow water and humidity to seep
in and cause rust. To prevent corrosion, avoid
damp cellars, stables (because of the presence
of ammonia) and areas where strong chemi-
cals are stored.
[ECB00721]
Long-term
Before storing your ATV for several months: 1. Follow all the instructions in the “Cleaning” section of this chapter.
2. Turn the fuel cock lever to “OFF”.
3. Drain the carburetor float chamber by loosen- ing the drain bolt; this will prevent fuel deposits
from building up. Pour the drained fuel into the
fuel tank.
4. Fill up the fuel tank and add fuel stabilizer (if available) to prevent the fuel from deteriorat-
ing. 5. Perform the following steps to protect the cyl-
inder, piston rings, etc. from corrosion.a. Remove the spark plug cap and spark plug.
b. Pour a teaspoonful of engine oil into the spark plug bore.
c. Install the spark plug cap onto the spark plug, and then place the spark plug on the
cylinder head so that the electrodes are
grounded. (This will limit sparking during
the next step.)
d. Turn the engine over several times with the starter. (This will coat the cylinder wall with
oil.)
e. Remove the spark plug cap from the spark plug, and then install the spark plug and
the spark plug cap.
6. Lubricate all control cables and the pivoting points of all levers and pedals.
7. Check and, if necessary, correct the tire air pressure, and then block up the ATV so that
all of its wheels are off the ground. Alternative-
Specified amount:
7.5 ml of stabilizer to each liter of fuel (or 1
oz of stabilizer to each gallon of fuel)U1PD61E0.book Page 2 Tuesday, February 14, 2012 10:06 AM