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5TH-9-15-3 6/15/05 2:56 PM Page 8-36
EBU00428
Model
Dimension:
Overall length
Overall width
Overall height
Seat height
Wheel base
Ground clearance
Minimum turning radius
Basic weight:
With oil and full fuel tank
Engine:
Type
Cylinder arrangement
Displacement
Bore
× Stroke
Compression ratio
Starting system
Lubrication system
SPECIFICATIONS
YFM80R
1,537 mm (60.5 in)
841 mm (33.1 in)
940 mm (37.0 in)
669 mm (26.3 in)
1,030 mm (40.6 in)
100 mm ( 3.94 in)
2,400 mm (94.5 in)
116 kg (256 lb)
Air cooled, 4-stroke, SOHC
Single cylinder, Forward inclined
79 cm 3 (4.82 cu.in)
47.0
× 45.6 mm (1.85 × 1.80 in)
9.6 : 1
Electric starter
Wet sump
10-1
10
5TH-9-15-3 6/15/05 2:56 PM Page 8-37
Engine oil:
Type
Quantity:
Periodic oil change
Model
Recommended engine oil classification:
10-2
YFM80R
0° 10° 30° 50° 70° 90° 110° 130°F
YAMALUBE 4 (20W40) or SAE20W40
YAMALUBE 4 (10W30) or SAE10W30
SAE 5W30
–20° –10°
0°
10° 20° 30°
40°
50°C
API Service SE, SF, SG type or higher c C
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.
0.80 L (0.70 lmp qt, 0.85 US qt)
5TH-9-15-3 6/15/05 2:56 PM Page 8-38
Final gear oil:
Type
Quantity:
Total amount
Air filter:
Fuel:
Type
Tank capacity
Reserve amount
Carburetor:
Type/manufacturer
Spark plug:
Type/manufacturer
Gap
Clutch type:
Model YFM80R
SAE80API “GL-4” Hypoid gear oil
0.12 L (0.11 Imp qt, 0.13 US qt)
Wet type element
UNLEADED GASOLINE ONLY
6.8 L (1.5 Imp gal, 1.8 US gal)
0.9 L (0.2 Imp gal, 0.2 US gal)
VM16SH/MIKUNI
CR7HSA/NGK
0.6–0.7 mm (0.024–0.028 in)
Wet, multiple-disc automatic
10-3
5TH-9-15-3 6/15/05 2:56 PM Page 8-39
Model
Transmission:
Primary reduction system
Primary reduction ratio
Secondary reduction system
Secondary reduction ratio
Transmission type
Operation
Gear ratio:
1st
2nd
3rd
Chassis:
Frame type
Caster angle
Trail
Tire:
Type
Size : Front
: Rear
Manufacturer/type
Front
Rear
YFM80R
Spur gear
65/20 (3.250)
Shaft drive
19/18
× 34/10 (3.588)
Constant mesh 3-speed
Left foot operation
39/11 (3.545)
35/17 (2.059)
31/22 (1.409)
Steel tube
1°
3.8 mm (0.15 in)
Tubeless
AT18
× 7-7
AT18
× 8-7
10-4
DUNLOP/KT586
DUNLOP/KT587
5TH-9-15-3 6/15/05 2:56 PM Page 8-40
Model
Brake:
Front brake type
Operation
Rear brake type
Operation
Suspension:
Front
Rear
Shock Absorber:
Front
Rear
Wheel travel:
Front
Rear
Electrical:
Ignition system
Charging system
Battery type/voltage, capacity
Indicator light voltage, wattage
× quantity:
Neutral
Fuse:
YFM80R
Drum brake
Right hand operation
Drum brake
Left hand and right foot operation
Leading arm
Swingarm
Coil spring/Oil damper
Coil spring/Oil damper
57 mm (2.24 in)
56 mm (2.2 in)
C.D.I.
A.C. magneto
12N7D-3B/12V, 7Ah
10-5
12V, 1.7W
× 1
5A
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