MANUFACTURED BY: JO-BU A/S MEKANISKE VERKSTED, DROBAK, NORWAY
YEAR INTRODUCED:
1964
ENGINE DISPLACEMENT:
69 ccm (4.2 cu. in.)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
50mm (1.96 in.)
PISTON STROKE:
35mm (1.37 in.)
MANUFACTURER ADVERTISED H.P.:
3.5
WEIGHT :
8.4 kg. with 40 cm bar & chain
18.5 lbs. with 15 in. bar & chain
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Rigid
CHAIN BRAKE:
none
CLUTCH:
Centrifugal, engages at 3,500 rpm
DRIVE TYPE:
Direct
MAGNETO TYPE:
Bosch
CARBURETOR:
Tillotson HS-69A
MAJOR REPAIR KIT:
RK-23HS
MINOR REPAIR KIT:
DG-5HS/T
OIL PUMP:
Automatic, synchronized with throttle. Adjustable
OPERATING RPM:
7000
FUEL TANK CAPACITY:
900 ml
FUEL OIL RATIO:
20:1