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Model: 0MG CHAIN SAW

MANUFACTURED BY:
MALL TOOL COMPANY
CHICAGO, ILLINOIS, U.S.A.
CRETE, ILLINOIS, U.S.A.
TORONTO, ONTARIO, CANADA
GUELPH, ONTARIO, CANADA
SERIES OR ASSEMBLY NUMBER:
4500H
SERIAL NUMBER PREFIX:
YEAR INTRODUCED:
1954
YEAR DISCONTINUED:
1955
ENGINE DISPLACEMENT:
5.0 cu. in. (80ccm)
NUMBER OF CYLINDERS:
One
CYLINDER BORE:
2.06 in. (52mm)
PISTON STROKE:
1.5 in. (38mm)
PISTON RING THICKNESS:
2 rings used
CYLINDER TYPE:
Aluminum with CHROME plated bore
INTAKE METHOD:
Reed Valve
MANUFACTURER ADVERTISED H.P.:
3.5 Brake Horsepower
WEIGHT:
With 18in (45cm) Bar - 34lbs. (15.4kg.)
OPERATOR CONFIGURATION:
One Man Operation
HANDLEBAR SYSTEM:
Rigid
CHAIN BRAKE:
none
CLUTCH:
Centrifugal Mall Design
DRIVE TYPE:
Gilmer Belt Reduction
CONSTRUCTION:
Sand Cast Magnesium, later version Die Cast Magnesium
MAGNETO TYPE:
Bendix Scintilla
CARBURETOR:
Tillotson ME Float type, optional Tillotson HP Diaphragm
MAJOR REPAIR KIT:
nla
MINOR REPAIR KIT:
nla
AIR FILTER SYSTEM:
Skinner ribbon element
STARTER TYPE:
Mall Design Rewind type
OIL PUMP:
Automatic eccentric driven piston pump
MAXIMUM ENGINE RPM:
5,000 under load
IDLE RPM:
2,800
IGNITION TIMING:
Fire at 38 degrees B.T.D.C.
BREAKER POINT SETTING:
0.018" to 0.020" (0.45 to 0.51 mm)
FLYWHEEL/COIL AIR GAP:
Position fixed
SPARK PLUG TYPE:
Champion J6J
SPARK PLUG GAP:
0.025" (0.63mm)
CRANKSHAFT MAIN BEARINGS:
Ball and Roller types
FUEL TANK CAPACITY:
24 fl. oz.
FUEL OIL RATIO:
1/2 pint to 1 U.S. gallon (16-1)
RECOMMENDED FUEL OCTANE:
Regular. 72 to 84 octane
MIX OIL SPECIFICATION:
SAE 30 non detergent or Mall Oil # 22715
CHAIN PITCH:
9/16" (14mm)
CHAIN TYPE:
Mall Inside-Outside Router
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED:
12 in. (30cm)
LONGEST GUIDE BAR SUPPLIED:
42 in. (106cm)
COLOUR SCHEME:
Mall Red
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:
Unique Characteristic: 1/2 crankshaft design motor. Some units were built with Mahle cylinder imported from Germany.


Images of saw in SON RANCH LOGGING MUSEUM in GRAND FORKS, B.C. CANADA


 

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