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 TYPEU. S. A. TYPE

(From No. F. 120001)

U. S. A. TYPE

(From No. F. 270236)

DIMENSION
Overall length1.270 mm (50.0 in)1.280 mm (50.4 in)
Overall width635 mm (25.0 in)590 mm (23.2 in)
Overall height1,000 (39.4 in)860 mm (33.9 in)
Wheel base880 mm (34.7 in)
Min. ground clearance170 mm (6.7 in)
Curb weight49 kg ( 108 lbs)50 kg (110 lbs)53.5 kg (118 lbs)
FRAME
Suspension (F)Telescopic fork
Suspension ®Rigid frame
BrakesInternal expansion
Fuel tank capacity2.5 lit. (0.7 U. S. gal., 0.6 Imp. gal.)
Trail40 mm (1.57 in)
Caster67°
Tire size and air pressure (F & R)3.50-8, 1.0 kg/cm2 (14.2 psi)
ENGINE
Cylinder layoutSingle, tilt up 10° from horizontal
Valve arrangementOHV, overhead camshaft
Bore and stroke39 x 41.4 mm (1.535 x 1.630 in)
Compression ratio8.8
Displacement49 cc (3.0 cu-in)
Oil Capacity0.8 lit. (1.7 U. S. pt., 1.4 Imp. pt.)
LubricationPressure lubrication & wet sump
Oil filtersCentrifugal and screen mesh
Reduction ratios
   Primary3.722
   Secondary2.6152.917
Gear ratios
   1st3.182
   2nd1.824
   3rd1.190
Starting methodKick starter
PERFORMANCE
Max. speed45 kph (28 mph)
Max. torque0.31 kg-m/4,200 rpm (2.2 ft-lb/4,200 rpm)
Max. output1.95 ps /5,000 rpm
Fuel consumption70 km/lit. at 20 kph (165 mile U. S. gal.,

198 mile/Imp. gal. at 12 mph)

Climbing ability17°
Min. turning cycle2.6 m (8.6 ft)
Braking distance3.5 m at 20 kph (11.5 ft. at 12 mph)
ELECTRICAL
IgnitionFlywheel magneto
Spark plugNGK C-6 H or ND U20FS
Head light6V-15W6V-15/15W
Tail/stop light6V-8/3W6V-17/5.3W