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9-7
EBU00427
B. STORAGE
Long term storage (60 days or more) of your
machine will require some preventive proce-
dures to guard against deterioration. After thor-
oughly cleaning the machine, prepare for stor-
age as follows:
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
tablespoon of SAE 10W30 or 20W40
motor oil in the spark plug hole and rein-
stall 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.
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10-1
Model YFM80
Dimensions:
Overall length 1,537 mm
Overall width 841 mm
Overall height 940 mm
Seat height 669 mm
Wheelbase 1,030 mm
Ground clearance 100 mm
Minimum turning radius 2,400 mm
Basic weight:
With oil and full fuel tank 116 kg
Engine:
Type Air-cooled 4-stroke, SOHC
Cylinder arrangement Single cylinder, forward-inclined
Displacement 79 cm
3
Bore × Stroke 47.0 ×45.6 mm
Compression ratio 9.6 : 1
Starting system Electric starter
Lubrication system Wet sump
EBU00428
SPECIFICATIONS
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10-3
Model YFM80
Final gear oil:
Type SAE 80API “GL-4” Hypoid gear oil
Quantity:
Total amount 0.12 L
Air filter: Wet type element
Fuel:
Type Unleaded gasoline only
For Europe: Regular Unleaded gasoline only
with a research octane number of
91 or higher
Tank capacity 6.8 L
Reserve amount 0.9 L
Carburetor:
Type/manufacturer VM16SH/MIKUNI
Spark plug:
Type/manufacturer CR7HS/NGK
Gap 0.6–0.7 mm
Clutch type: Wet, multiple-disc automatic
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