Page 434 of 456
10-1
EBU00428
1-SPECIFICATIONS
Model YFM660FA
Dimensions:
Overall length 2,085 mm
Overall width 1,150 mm
Overall height 1,210 mm
Seat height 880 mm
Wheelbase 1,275 mm
Ground clearance 275 mm
Minimum turning radius 3,200 mm
Basic weight:
With oil and full fuel tank 290 kg
Noise and vibration level:
Noise level (77/311/EEC) (for Europe) 80 dB (A)
Vibration on seat (EN1032, ISO5008) (for Europe) Not exceed 0.5 m/s
2
Vibration on handlebar (EN1032, ISO5008)
(for Europe) 2.8 m/s
2
Engine:
Engine type Liquid-cooled 4-stroke, SOHC
Cylinder arrangement Forward-inclined single cylinder
Displacement 660 cm
3
Bore
× stroke 100
× 84 mm
U5KM63.book Page 1 Monday, March 15, 2004 11:44 AM
Page 435 of 456
10-2
10
Compression ratio 9.1 :1
Starting system Electric and recoil starter
Lubrication system Wet sump
Engine oil:
Type
Recommended engine oil classification API Service SE, SF, SG type or higherModel YFM660FA
-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.
U5KM63.book Page 2 Monday, March 15, 2004 11:44 AM
Page 436 of 456
10-3
Engine oil:
Quantity:
Without oil filter cartridge replacement 1.9 L
With oil filter cartridge replacement 2.0 L
Final gear case oil:
Type SAE80 API GL-4 Hypoid gear oil
Quantity 0.25 L
Differential gear case oil:
Type SAE80 API GL-4 Hypoid gear oil
Quantity 0.28 L
Radiator capacity (including all routes): 1.80 L
Air filter: Wet element
Fuel:
Type Unleaded gasoline only
For Europe: Regular unleaded gasoline only with a
research octane number of 91 or higher
Fuel tank capacity 20 L
Fuel reserve amount 3.5 L
Carburetor:
Type / quantity BSR42 / 1
Manufacturer MIKUNIModel YFM660FA
U5KM63.book Page 3 Monday, March 15, 2004 11:44 AM
