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Model: BIG TIMBER

MANUFACTURED BY:
STRUNK MANUFACTURING CO.
COATESVILLE, PENNSYLVANIA, U.S.A.
SERIES OR ASSEMBLY NUMBER:
YEAR INTRODUCED:
1957
YEAR DISCONTINUED:
ENGINE DISPLACEMENT:
6.4 cu. in. (105 cc)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
2.250 in. (57 mm)
PISTON STROKE:
1.625 in. (41 mm)
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with cast iron sleeve
INTAKE METHOD:
Reed valve
MANUFACTURER ADVERTISED H.P.:
4 @ 4,500
WEIGHT:
30 lbs. (13.6 kg) powerhead only
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 diaphragm type
MAJOR REPAIR KIT:
MINOR REPAIR KIT:
AIR FILTER SYSTEM:
Skinner ribbon element
STARTER TYPE:
Fairbanks Morse automatic rewind
OIL PUMP:
Automatic pressurized system
MAXIMUM ENGINE RPM:
4,500
IDLE RPM:
IGNITION TIMING:
0.15625 in. (3.96 mm) before TDC
BREAKER POINT SETTING:
0.020 in. (0.51 mm)
FLYWHEEL/COIL AIR GAP:
Position is fixed
SPARK PLUG TYPE:
Champion J-12-J, A11X, AC M47, also UJ-12
SPARK PLUG GAP:
0.040 in. (1.01 mm)
CRANKSHAFT MAIN BEARINGS:
Ball
FUEL TANK CAPACITY:
64 fl. oz. (1.89 litres)
FUEL OIL RATIO:
1/2 pint to 1 gallon = 16:1
RECOMMENDED FUEL OCTANE:
Regular grade 72 to 83
MIX OIL SPECIFICATION:
SAE 30 non-detergent motor oil
CHAIN PITCH:
1/2 in., 7/16 in. or 3/8 in.
CHAIN TYPE:
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED:
16 in. (40 cm)
LONGEST GUIDE BAR SUPPLIED:
19 in. (48 cm)
COLOUR SCHEME:
Red enamel
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:
used West Bend engine



 

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