MANUFACTURED BY:  |   | ECHO (KIORITZ CORPORATION) | 
  |   | YOKOSUKA, MORIOKA Japan | 
SERIES OR ASSEMBLY NUMBER:  |   |  | 
SERIAL NUMBER PREFIX:   |   |  | 
YEAR INTRODUCED:  |   | 1969 | 
YEAR DISCONTINUED:  |   |  | 
ENGINE DISPLACEMENT:  |   | 80.6 ccm (4.95 cu. in.) | 
NUMBER OF CYLINDERS:  |   | Air cooled, two-stroke, single cylinder gasoline engine | 
CYLINDER BORE:  |   | 52 mm (2.05 in.) | 
PISTON STROKE:  |   | 38 mm (1.50 in.) | 
PISTON RING THICKNESS:   |   | 2 rings used | 
CYLINDER TYPE:  |   | Aluminum with CHROME plated bore | 
INTAKE METHOD:  |   | Reed valves, plate with 6 | 
MANUFACTURER ADVERTISED H.P.:  |   |  | 
WEIGHT:  |   | 8.6 kg (18.92 lbs.) powerhead only | 
OPERATOR CONFIGURATION:  |   | One Man operation | 
HANDLEBAR SYSTEM:  |   | Anti-Vibration  | 
CHAIN BRAKE:  |   | none | 
CLUTCH:  |   | Centrifugal | 
DRIVE TYPE:  |   | Direct | 
CONSTRUCTION:  |   | Die cast MAGNESIUM alloy | 
MAGNETO TYPE:  |   | Flywheel magneto | 
CARBURETOR:  |   | Tillotson HS-54B | 
MAJOR REPAIR KIT:  |   | RK-23HS | 
MINOR REPAIR KIT:  |   | DG-5HS/T | 
AIR FILTER SYSTEM:  |   |  | 
STARTER TYPE:  |   | Automatic rewind | 
OIL PUMP:  |   | Automatic with manual override | 
MAXIMUM ENGINE RPM:  |   |  | 
IDLE RPM:  |   |  | 
IGNITION TIMING:  |   | Fixed | 
BREAKER POINT SETTING:  |   |  | 
FLYWHEEL/COIL AIR GAP:  |   |  | 
SPARK PLUG TYPE:  |   | NGK BM6 | 
SPARK PLUG GAP:  |   |  | 
CRANKSHAFT MAIN BEARINGS:  |   | Ball | 
FUEL TANK CAPACITY:  |   | 1 Liter  | 
FUEL OIL RATIO:  |   | 20:1 | 
RECOMMENDED FUEL OCTANE:  |   | 89 regular automotive. 
 ASPEN2 pre-mixed Alkylate fuel is 
 best at 93 octane, no ethanol, has very long shelf life | 
MIX OIL SPECIFICATION:  |   | ECHO two cycle. ISO-L-EDG. Jaso M345/FD 
 ASPEN Synthetic mix oil is best | 
CHAIN PITCH:  |   | .404 | 
CHAIN TYPE:  |   | Carlton B2LM | 
BAR MOUNT PATTERN:  |   | 10 link | 
SHORTEST GUIDE BAR SUPPLIED:  |   | 40 cm (16 in.) | 
LONGEST GUIDE BAR SUPPLIED:  |   | 80 cm (32 in.) | 
COLOUR SCHEME:  |   | ECHO Orange enamel with Black top | 
PAINT CODES:  |   |  | 
ILLUSTRATED PARTS LIST:  |   |   | 
SERVICE MANUAL:  |   |   |