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Model: 20 Hi-Speed

MANUFACTURED BY:
BURNS MANUFACTURING COMPANY INC.
LOUISVILLE, GA. U.S.A.
SERIES OR ASSEMBLY NUMBER:
YEAR INTRODUCED:
1956
YEAR DISCONTINUED:
ENGINE DISPLACEMENT:
5.1 cu. in. (83.5 mm)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
2.0 in. (57 mm)
PISTON STROKE:
1.625 in. (41 mm)
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with cast iron sleeve
INTAKE METHOD:
Reed valves
MANUFACTURER ADVERTISED H.P.:
2.8 @ 4,000
WEIGHT:
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Rigid
CHAIN BRAKE:
none
CLUTCH:
Centrifugal
DRIVE TYPE:
Direct
CONSTRUCTION:
Sand cast aluminum
MAGNETO TYPE:
Wico
CARBURETOR:
Tillotson
MAJOR REPAIR KIT:
MINOR REPAIR KIT:
AIR FILTER SYSTEM:
STARTER TYPE:
Fairbanks Morse automatic rewind
OIL PUMP:
Manual
MAXIMUM ENGINE RPM:
4,000
IDLE RPM:
IGNITION TIMING:
0.250 in. (6.35 mm) before TDC
BREAKER POINT SETTING:
0.020 in. (0.51 mm)
FLYWHEEL/COIL AIR GAP:
fixed
SPARK PLUG TYPE:
Champion J12J
SPARK PLUG GAP:
0.040 in. (1.01 mm)
CRANKSHAFT MAIN BEARINGS:
Ball and caged needle roller
FUEL TANK CAPACITY:
FUEL OIL RATIO:
1/2 pint to 1 gallon
RECOMMENDED FUEL OCTANE:
Regular
MIX OIL SPECIFICATION:
SAE 30 or SAE 40 non detergent oil
CHAIN PITCH:
7/16 in.
CHAIN TYPE:
Oregon
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED:
12 in. (30 cm)
LONGEST GUIDE BAR SUPPLIED:
24 in. (61 cm)
COLOUR SCHEME:
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:
uses West Bend engine 2785



 

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