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5-1
5
EBU19201
PRE-OPERATION CHECKS
EBU19224Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always
follow the inspection and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWB00481Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equip-
ment damage. Do not operate the vehicle if you find any problem. If a problem cannot be corrected
by the procedures provided in this manual, have the vehicle inspected by a Yamaha dealer.Before using this vehicle, check the following points:
ITEMROUTINE PAGE
Fuel Check fuel level in fuel tank, and add recommended fuel if neces-
sary.
Check fuel line for leakage. Correct if necessary. 4-15, 5-3
Engine oil Check oil level in engine, and add recommended oil to specified lev-
el if necessary.
Check ATV for oil leakage. Correct if necessary. 5-3, 8-17
Final gear oil Check ATV for oil leakage. Correct if necessary. 5-3, 8-21
Differential gear oil Check ATV for oil leakage. Correct if necessary. 5-3, 8-24
Coolant Check coolant level in reservoir, and add recommended coolant to
specified level if necessary.
Check cooling system for leakage. Correct if necessary. 5-3, 8-26
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8-18
86. If the engine oil is not between the tip of the
dipstick and the maximum level mark, add
sufficient oil of the recommended type to raise
it to the correct level. NOTICE: Be sure the
engine oil is at the correct level, otherwise
engine damage may result.
[ECB00851]
7. Insert the dipstick into the oil filler hole, and then tighten the engine oil filler cap.
8. Install the panel. To change the engine oil (with or without oil fil-
ter cartridge replacement)
1. Place the ATV on a level surface.
2. Remove panel E. (See page 8-10.)
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 engine oil filler cap, and then re- move the engine oil drain bolt and its gasket to
drain the oil from the crankcase.1. Engine oil dipstick
2. Maximum level mark
3. Tip of the engine oil dipstick
1. Engine oil drain bolt
2. Gasket
12
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8-21
8
12. Refill with the specified amount of the recom-
mended engine oil, and then install and tight-
en the engine oil filler cap.
TIPBe sure to wipe off spilled oil on any parts after the
engine and exhaust system have cooled down.NOTICEECB00300●In order to prevent clutch slippage (since the
engine oil also lubricates the clutch), do not
mix any chemical additives. Do not use oils
with a diesel specification of “CD” or oils of
a higher quality than specified. In addition,
do not use oils labeled “ENERGY CONSERV-
ING II” or higher.
●Make sure that no foreign material enters the
crankcase.13. Start the engine, and then let it idle for severalminutes while checking it for oil leakage. If oil
is leaking, immediately turn the engine off and
check for the cause.
14. Turn the engine off, wait at least ten minutes, and then check the oil level and correct it if
necessary.
15. Install panel E.EBU30270Final gear oil The final gear case must be checked for oil leak-
age before each ride. If any leakage is found, have
a Yamaha dealer check and repair the ATV. In ad-
dition, the final gear oil level must be checked and
the oil changed as follows at the intervals specified
in the periodic maintenance and lubrication chart.
To check the final gear oil level 1. Place the ATV on a level surface.
2. Remove the final gear oil filler bolt and its gas- ket, and then check the oil level in the final
gear case. The oil level should be at the brim
of the filler hole.
Recommended oil:
See page 10-1.
Oil quantity: Without oil filter cartridge replacement:2.30 L (2.43 US qt, 2.02 Imp.qt)
With oil filter cartridge replacement: 2.40 L (2.54 US qt, 2.11 Imp.qt)
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8-22
83. If the oil is below the brim of the filler hole, add
sufficient oil of the recommended type to raise
it to the correct level.
4. Check the oil filler bolt gasket for damage, and replace it if necessary.
5. Install the oil filler bolt and its gasket, and then tighten the bolt to the specified torque. To change the final gear oil
1. Place the ATV on a level surface.
2. Remove the engine guard and the final gear case guard by removing the bolts.
3. Place an oil pan under the final gear case to collect the used oil.
4. Remove the final gear oil filler bolt, the final gear oil drain bolt and their gasket to drain the
oil from the final gear case.
1. Final gear oil filler bolt
2. Gasket
3. Final gear oil
4. Correct oil levelTightening torque:Final gear oil filler bolt:22 Nm (2.2 m·kgf, 16 ft·lbf)1
2
3
4
1. Engine guard
2. Final gear case guard
3. Bolt
2
3 3
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8
5. Install the drain bolt and its new gasket, and
then tighten the bolt to the specified torque.
6. Refill with the recommended final gear oil to the brim of the filler hole as shown. NOTICE:
Be sure no foreign material enters the final
gear case.
[ECB00421]
TIPIf the recommended oil is not available, SAE80W-
90 API GL-5 Hypoid gear oil may be used instead.
However, when using this oil, noise from the final
gear case may occur when applying the rear
brake.
1. Final gear oil drain bolt
2. GasketTightening torque: Final gear oil drain bolt:22 Nm (2.2 m·kgf, 16 ft·lbf)
12
1. Final gear oil filler bolt
2. Gasket
3. Final gear oil
4. Correct oil levelRecommended final gear oil: See page 10-1.1
2
3
4
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8-25
8
3. If the oil is below the brim of the filler hole, add
sufficient oil of the recommended type to raise
it to the correct level.
4. Check the gasket for damage, and replace it if necessary.
5. Install the oil filler bolt and its gasket, and then tighten the bolt to the specified torque.
To change the differential gear oil 1. Place the ATV on a level surface.
2. Place an oil pan under the differential gear case to collect the used oil.
3. Remove the differential gear oil filler bolt, the differential gear oil drain bolt and their gasket
to drain the oil from the differential gear case. 4. Install the drain bolt and its new gasket, and
then tighten the bolt to the specified torque.
5. Refill with the recommended differential gear oil to the brim of the filler hole as shown.
NOTICE: Be sure no foreign material en-
ters the differential gear case.
[ECB00411]
Tightening torque: Differential gear oil filler bolt:23 Nm (2.3 m·kgf, 17 ft·lbf)
1. Differential gear oil drain bolt
2. GasketTightening torque: Differential gear oil drain bolt:9.8 Nm (0.98 m·kgf, 7.1 ft·lbf)
12
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8-26
86. Check the oil filler bolt gasket for damage, andreplace it if necessary.
7. Install the oil filler bolt and its gasket, and then tighten the bolt to the specified torque. 8. Check the differential gear case for oil leak-
age. If oil is leaking, check for the cause.
EBU23470Coolant The coolant level should be checked before each
ride. In addition, the coolant must be changed at
the intervals specified in the periodic maintenance
and lubrication chart.EBU27126To check the coolant level1. Place the ATV on a level surface.TIPThe coolant level must be checked on a cold en-
gine since the level varies with engine tempera-
ture.2. Check the coolant level in the coolant reser- voir.TIPThe coolant should be between the minimum and
maximum level marks.
1. Differential gear oil filler bolt
2. Gasket
3. Differential gear oil
4. Correct oil levelRecommended differential gear oil:See page 10-1.
Tightening torque: Differential gear oil filler bolt:23 Nm (2.3 m·kgf, 17 ft·lbf)
1
2
3
4
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10-1
10
EBU25961
SPECIFICATIONS
Dimensions:Overall length:1993 mm (78.5 in)
Overall width: 1093 mm (43.0 in)
Overall height:
1120 mm (44.1 in)
Seat height: 840 mm (33.1 in)
Wheelbase: 1233 mm (48.5 in)
Ground clearance:
245 mm (9.6 in)
Minimum turning radius: 3000 mm (118 in)Weight:With oil and fuel:
YFM450DE 275.0 kg (606 lb) (AUS)(NZL)
YFM450DE 276.0 kg (608 lb) (EUR)(FRA)(GBR)
YFM450PE 281.0 kg (619 lb) (AUS)(NZL)
YFM450PE 282.0 kg (622 lb) (EUR)(FRA)(GBR)
YFM450PHE 282.0 kg (622 lb)Noise and vibration level:Noise level (77/311/EEC):YFM450DE 78.3 dB(A) (EUR)(FRA)(GBR)
YFM450PE 78.3 dB(A) (EUR)(FRA)(GBR)
YFM450PHE 78.3 dB(A) Vibration on seat (EN1032, ISO5008):
YFM450DE 0.6 m/s² (EUR)(FRA)(GBR)
YFM450PE 0.6 m/s² (EUR)(FRA)(GBR)
YFM450PHE 0.6 m/s²
Vibration on handlebar (EN1032, ISO5008): YFM450DE Will not exceed 2.5 m/s² (EUR)(FRA)(GBR)
YFM450PE Will not exceed 2.5 m/s² (EUR)(FRA)(GBR)
YFM450PHE Will not exceed 2.5 m/s²
Engine:Engine type:Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
Single cylinder
Displacement: 421 cm³
Bore × stroke:
84.5 × 75.0 mm (3.33 × 2.95 in)
Compression ratio:
10.00 : 1
Starting system: Electric starter
Lubrication system: Wet sumpEngine oil:Recommended brand:YAMALUBE
U2LC60E0.book Page 1 Friday, March 8, 2013 1:18 PM