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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.
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10-1
EBU00428
SPECIFICATIONS
Model YFM660FP
Dimensions:
Overall length 2,085 mm
Overall width 1,150 mm
Overall height 1,210 mm
Seat height 880 mm
Wheelbase 1,275 mm
Minimum 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) 80 dB (A)
Vibration on seat (EN1032, ISO5008) Not exceed 0.5 m/s
2
Vibration on handlebar (EN1032, ISO5008) 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
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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 YFM660FP
-20˚-10˚0˚
10˚20˚30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
CAUTION:
Be sure to use motor oils that do not contain anti-
friction modifiers. Passenger car motor oils (often
labeled “Energy Conserving II”) contain anti-fric-
tion additives which will cause clutch and/or
starter clutch slippage, resulting in reduced com-
ponent life and poor engine performance.
U5KM60.book Page 2 Thursday, June 21, 2001 2:40 PM
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10-3
Engine oil:
Quantity:
Periodic oil change 1.9 L
With oil filter replacement 2.0 L
Total amount 2.2 L
Final gear case oil:
Type SAE80 API “GL-4” Hypoid gear oil
Quantity:
Periodic oil change 0.25 L
Total amount 0.30 L
Differential gear case oil:
Type SAE80 API “GL-4” Hypoid gear oil
Quantity:
Periodic oil change 0.28 L
Total amount 0.33 L
Air filter: Wet type element
Fuel:
Type For Europe
REGULAR UNLEADED GASOLINE ONLY
For Oceania
UNLEADED GASOLINE ONLY
Fuel tank capacity 20 L
Fuel reserve amount 3.5 LModel YFM660FP
U5KM60.book Page 3 Thursday, June 21, 2001 2:40 PM