This interesting information originally appeared in a Honda Service Manual dated 1971

  • The overhead cam design enables a quiet operation and constant high output over a broad speed range starting at slow speed with very little effort.
  • Incorporation of the oil damper tyre cam chain tensioner automatically maintains the proper tension and minimizes the chain noise, further, chain adjustment is unnecessary.
  • Riding is simplified by the use of the automatic clutch which is interconnected with the gear change pedal.
  • Metal screen and centrifugal filter assures only clean oil to lubricate the critical moving parts.
  • Foldable handle bar makes strong in narrow space possible.
  • Frame is welded pipe backbone design having a double channel welded to a single main pipe to reduce weight.
  • To prevent spillage of fuel during transportation fuel shut off valves are provided in the filler cap and the carburetor.

 

GENERAL EXPORT TYPE

 

TYPE (From F. No. 120001)
U.S.A. TYPE (From F. No. 270236)

 

SPECIFICATION TABLE

GENERAL EXPORT TYPE U. S. A. TYPE

(From No. F. 120001)

U. S. A. TYPE

(From No. F. 270236)

DIMENSION
Overall length 1.270 mm (50.0 in) 1.280 mm (50.4 in)
Overall width 635 mm (25.0 in) 590 mm (23.2 in)
Overall height 1,000 (39.4 in) 860 mm (33.9 in)
Wheel base 880 mm (34.7 in)
Min. ground clearance 170 mm (6.7 in)
Curb weight 49 kg ( 108 lbs) 50 kg (110 lbs) 53.5 kg (118 lbs)
FRAME
Suspension (F) Telescopic fork
Suspension ® Rigid frame
Brakes Internal expansion
Fuel tank capacity 2.5 lit. (0.7 U. S. gal., 0.6 Imp. gal.)
Trail 40 mm (1.57 in)
Caster 67°
Tire size and air pressure (F & R) 3.50-8, 1.0 kg/cm2 (14.2 psi)
ENGINE
Cylinder layout Single, tilt up 10° from horizontal
Valve arrangement OHV, overhead camshaft
Bore and stroke 39 x 41.4 mm (1.535 x 1.630 in)
Compression ratio 8.8
Displacement 49 cc (3.0 cu-in)
Oil Capacity 0.8 lit. (1.7 U. S. pt., 1.4 Imp. pt.)
Lubrication Pressure lubrication & wet sump
Oil filters Centrifugal and screen mesh
Reduction ratios
   Primary 3.722
   Secondary 2.615 2.917
Gear ratios
   1st 3.182
   2nd 1.824
   3rd 1.190
Starting method Kick starter
PERFORMANCE
Max. speed 45 kph (28 mph)
Max. torque 0.31 kg-m/4,200 rpm (2.2 ft-lb/4,200 rpm)
Max. output 1.95 ps /5,000 rpm
Fuel consumption 70 km/lit. at 20 kph (165 mile U. S. gal.,

198 mile/Imp. gal. at 12 mph)

Climbing ability 17°
Min. turning cycle 2.6 m (8.6 ft)
Braking distance 3.5 m at 20 kph (11.5 ft. at 12 mph)
ELECTRICAL
Ignition Flywheel magneto
Spark plug NGK C-6 H or ND U20FS
Head light 6V-15W 6V-15/15W
Tail/stop light 6V-8/3W 6V-17/5.3W