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Model: 81

MANUFACTURED BY:
FALLS PRODUCTS INC.
GENOA, IL U.S.A.
SERIES OR ASSEMBLY NUMBER:
YEAR INTRODUCED:
1957
YEAR DISCONTINUED:
1965
ENGINE DISPLACEMENT:
7.98 cu. in. ((130.7 cc)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
2.50 in. (63.5 mm)
PISTON STROKE:
1.625 in. (41.2 mm)
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with cast iron sleeve
INTAKE METHOD:
Reed valves
MANUFACTURER ADVERTISED H.P.:
6
WEIGHT:
23 lbs. (10.4 kg) powerhead only
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Rigid
CHAIN BRAKE:
none
CLUTCH:
Centrifugal
DRIVE TYPE:
Direct
CONSTRUCTION:
Sand cast magnesium
MAGNETO TYPE:
Phelon
CARBURETOR:
Float type
MAJOR REPAIR KIT:
nla
MINOR REPAIR KIT:
nla
AIR FILTER SYSTEM:
STARTER TYPE:
Fairbanks Morse automatic rewind
OIL PUMP:
Automatic
MAXIMUM ENGINE RPM:
4,500
IDLE RPM:
IGNITION TIMING:
0.160 in. (4.06 mm) before TDC
BREAKER POINT SETTING:
0.020 in. (0.51 mm)
FLYWHEEL/COIL AIR GAP:
Position is fixed
SPARK PLUG TYPE:
Champion J7J, Autolite A7X, AC M45
SPARK PLUG GAP:
0.030 in. (0.76 mm)
CRANKSHAFT MAIN BEARINGS:
Ball on clutch end, caged needle roller on flywheel end
FUEL TANK CAPACITY:
FUEL OIL RATIO:
16:1
RECOMMENDED FUEL OCTANE:
Regular grade 72 to 83
MIX OIL SPECIFICATION:
Two cycle chain saw mix oil
CHAIN PITCH:
1/2 in.
CHAIN TYPE:
Oregon, Blue Jet and Atkins
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED:
18 in. (45 cm)
LONGEST GUIDE BAR SUPPLIED:
32 in. (81 cm)
COLOUR SCHEME:
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:
used Power Products AH-81 engine
Sold for $229.95 with 18 inch bar & chain in 1957



 

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