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Model: DD

MANUFACTURED BY:
LOMBARD
ASHLAND, MASS., U.S.A.
SERIES OR ASSEMBLY NUMBER:
SERIAL NUMBER PREFIX:
YEAR INTRODUCED:
1956
YEAR DISCONTINUED:
1958
ENGINE DISPLACEMENT:
4.7 cu. in. (77 ccm)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
2.0 in. (50.8 mm)
PISTON STROKE:
1.50 in. (38 mm)
PISTON RING THICKNESS:
2 rings used
CYLINDER TYPE:
Aluminum with cast iron sleeve
INTAKE METHOD:
Reed valves
MANUFACTURER ADVERTISED H.P.:
3 hp
WEIGHT:
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Rigid
CHAIN BRAKE:
none
CLUTCH:
Centrifugal, 2 shoes
DRIVE TYPE:
Direct
CONSTRUCTION:
Sand cast MAGNESIUM
MAGNETO TYPE:
Phelon flywheel type with breaker points
CARBURETOR:
Tillotson float type
MAJOR REPAIR KIT:
NLA
MINOR REPAIR KIT:
NLA
AIR FILTER SYSTEM:
Skinner ribbon filter element
STARTER TYPE:
Fairbanks Morse automatic rewind
OIL PUMP:
Manual
MAXIMUM ENGINE RPM:
4,500
IDLE RPM:
IGNITION TIMING:
0.175 in. (4.4 mm) before TDC
BREAKER POINT SETTING:
0.020 in. (0.51 mm)
FLYWHEEL/COIL AIR GAP:
fixed
SPARK PLUG TYPE:
Champion J8J, Autolite A7X, AC M34
SPARK PLUG GAP:
0.030 in. (0.76 mm)
CRANKSHAFT MAIN BEARINGS:
Ball
FUEL TANK CAPACITY:
FUEL OIL RATIO:
1/2 pint to 1 gallon
RECOMMENDED FUEL OCTANE:
72 to 83 (regular)
MIX OIL SPECIFICATION:
Air cooled Two cycle mix oil
CHAIN PITCH:
7/16 in.
CHAIN TYPE:
Oregon 62C
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED:
16 in. (40 cm)
LONGEST GUIDE BAR SUPPLIED:
24 in. (61 cm)
COLOUR SCHEME:
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:
Used AH47 Power Products engine. Lombard's first direct drive chain saw



 

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