GENERAL INFORMATION
SPECIFICATIONS
ITEM
DIMENSIONS
Overall length 1,960 mm (77.2 in.)
Overall width 830 mm (32.7 in.)
Overall height 1,130 mm (44.5 in.)
Wheelbase
1,280 mm (50.4 in.)
Seat height 730 mm (28.7 in.)
Foot peg height
180 mm ( 7.1 in.)
Dry weight
124 kg (273 lbs.)
FRAME
Type
Diamond
F. suspension, travel
Telescopic fork 115 mm (4.53 in.)
R. suspension, travel Swing arm 64 mm (2.53 in.)
F. tire size, pressure
3.00-17 (4PR) 1.75 kg/cm
2
(25 psi)
R. tire size, pressure 3.50—16 (4PR) 2.25 kg/cm
2
(32 psi)
F. brake, lining swept area Internal expanding shoes, 110 cm
2
(17.05 sq. in.)
R. brake lining, swept area
Internal expanding shoes, 123 cm
2
(19.07 sq. in.)
Fuel capacity
10.5 liters (2.8 U.S. gal.)
Fuel reserve capacity 3.0 liters (0.8 U.S. gal.)
Caster angle
62°
Trail 92 mm (3.6 in.)
Front fork oil capacity
125 cc (4.2 oz), 98 cc (3.3 oz) at draining
ENGINE
Type
Air cooled 4-stroke
Cylinder arrangement
Parallel twin 20° inclined from vertical
Bore and stroke 53x41 mm (2.09 x 1.61 in.)
Displacement
181 cc (11.03cu. in.)
Compression ratio
9.0 : 1
Valve train Chain drive overhead camshaft
Maximum horsepower
15.0 BHP/9,500 rpm
Maximum torque
1.28 kg-m (9.26 ft-lb.)/7,000 rpm
Oil capacity
1.5 liters (1.6 U.S. qt.)
Lubrication system Pressure and wet sump
Air filtration Oiled polyurethane foam
Cylinder compression
12.0 ± 2.0 kg/cm
2
(170 ± 28 psi)
Intake valve Opens
-3° (B.T.D.C.) at 1mm lift. 45° (B.T.D.C.) at 0 lift
Closes
34° (A.B.D.C.) at 1mm lift, 97° (A.B.D.C.) at 0 lift
Exhaust valve Opens 33° (B.B.D.C.) at 1 mm lift, 94° (B.B.D.C.) at 0 lift
Closes
-4° (A.T.D.C.) at 1mm lift, 49° (A.T.D.C.) at 0 lift
Valve clearance IN: 0.05 mm (0.002 in.)
EX: 0.05 mm (0.002 in.)
Idle speed
1,200 ± 100 rpm
1-2
Date of Issue: December, 1977
© HONDA MOTOR CO., LTD.
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