Page 322 of 452
8-49
7. Install the oil filler bolt, and then tighten it to
the specified torque.
8. Check for oil leakage. If oil leakage is found,
check for the cause.
9. Install the engine guard and the final gear
case guard by installing the bolts, and then
tightening them to the specified torques. Tightening torque:
Final gear oil filler bolt:
23 Nm (2.3 m·kgf)
Tightening torques:
Engine guard bolt:
7.0 Nm (0.7 m·kgf)
Final gear case guard bolt:
7.0 Nm (0.7 m·kgf)
EE.book Page 49 Wednesday, May 11, 2005 1:21 PM
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8-111
EBU00570
Cable inspection and lubrication
WARNING
Inspect cables frequently and replace if dam-
aged. Corrosion can result when the outer cov-
ering of control cables becomes damaged.
Cables can also become frayed or kinked. Op-
eration of controls could be restricted, which
could cause an accident or injury.Lubricate the inner cables and the cable ends. If
the cables do not operate smoothly, ask a Yamaha
dealer to replace them.
Recommended lubricant:
Engine oil
EE.book Page 111 Wednesday, May 11, 2005 1:21 PM
Page 426 of 452
9-7
EBU00427
B. STORAGE
Long term storage (60 days or more) of your ma-
chine will require some preventive procedures to
guard against deterioration. After thoroughly
cleaning the machine, prepare for storage as fol-
lows:
1. Fill the fuel tank with fresh fuel and add fuel
stabilizer (if available).NOTE:Use of fuel stabilizer eliminates the need to drain
the fuel system. Consult a Yamaha dealer if the
fuel system is to be drained instead.2. Remove the spark plug, pour about one ta-
blespoon of SAE 10W30 or 20W40 motor oil
in the spark plug hole and reinstall the spark
plug. Ground the spark plug wire and turn the
engine over several times to coat the cylinder
wall with oil.
3. Lubricate all control cables.
4. Block up the frame to raise all wheels off the
ground.
EE.book Page 7 Wednesday, May 11, 2005 1:21 PM
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10-1
EBU00428
SPECIFICATIONS
ModelYFM450FAV
Dimensions:
Overall length 1,993 mm
Overall width 1,093 mm
Overall height 1,120 mm
Seat height 830 mm
Wheelbase 1,233 mm
Ground clearance 245 mm
Minimum turning radius 3,000 mm
Basic weight:
With oil and full fuel tank For Europe 285 kg
For Oceania 289 kg
Noise and vibration level:
Noise level (77/311/EEC) (for Europe) 78.3 dB(A)
Vibration on seat (EN1032, ISO5008) (for Europe) Will not exceed 0.5 m/s
2
Vibration on handlebar (EN1032, ISO5008)
(for Europe)Will not exceed 2.5 m/s
2
Engine:
Engine type Liquid-cooled 4-stroke, SOHC
Cylinder arrangement Forward-inclined single cylinder
Displacement 421.0 cm
3
Bore
× stroke 84.5
× 75.0 mm
Compression ratio 10.0 :1
EE.book Page 1 Wednesday, May 11, 2005 1:21 PM
Page 431 of 452
10-2
10
Starting system Electric and recoil starter
Lubrication system Wet sump
Engine oil:
Type
Recommended engine oil classification API Service SE, SF, SG type or higherModelYFM450FAV
-20˚ -10˚ 0˚
10˚20˚ 30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
CAUTION:
In order to prevent clutch slippage (since the en-
gine 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 CONSERVING II” or higher.
EE.book Page 2 Wednesday, May 11, 2005 1:21 PM
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