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Model: Mac 1-70

MANUFACTURED BY:
McCULLOCH MOTORS CORP.
LOS ANGELES, CALIFORNIA, U.S.A.
SERIES OR ASSEMBLY NUMBER:
none
SERIAL NUMBER PREFIX:
none
YEAR INTRODUCED:
June 1959
YEAR DISCONTINUED:
July 1960
ENGINE DISPLACEMENT:
5.3 cu. in. (87ccm)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
2.125 in. (54mm)
PISTON STROKE:
1.500 in. (38mm)
PISTON RING THICKNESS:
2 rings used
CYLINDER TYPE:
Aluminum with cast iron sleeve
INTAKE METHOD:
Reed valves with third port induction system
MANUFACTURER ADVERTISED H.P.:
not advertised
WEIGHT:
19.5 lbs. powerhead only
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Rigid
CHAIN BRAKE:
none
CLUTCH:
Centrifugal
DRIVE TYPE:
Direct
CONSTRUCTION:
Die cast MAGNESIUM/ALUMINUM alloy
MAGNETO TYPE:
McCulloch
CARBURETOR:
McCulloch
MAJOR REPAIR KIT:
n/a
MINOR REPAIR KIT:
n/a
AIR FILTER SYSTEM:
Flocked wire screen
STARTER TYPE:
McCulloch automatic rewind
OIL PUMP:
Manual
MAXIMUM ENGINE RPM:
IDLE RPM:
IGNITION TIMING:
fixed
BREAKER POINT SETTING:
Just breaking with timing pin inserted in timing hole
FLYWHEEL/COIL AIR GAP:
0.011 to 0.015 in. (0.27 to 0.38 mm)
SPARK PLUG TYPE:
Champion J8J
SPARK PLUG GAP:
0.025 in. (0.63 mm)
CRANKSHAFT MAIN BEARINGS:
Ball
FUEL TANK CAPACITY:
1.6 U.S. Quarts
FUEL OIL RATIO:
20:1
RECOMMENDED FUEL OCTANE:
Regular
MIX OIL SPECIFICATION:
McCulloch two-cycle chain saw mix
CHAIN PITCH:
.404 in.
CHAIN TYPE:
McCulloch Pintail
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED:
12 in. (30cm)
LONGEST GUIDE BAR SUPPLIED:
36 in. (91cm)
COLOUR SCHEME:
McCulloch Yellow enamel with Black air filter cover
PAINT CODES:
ILLUSTRATED PARTS LIST:
56777, micro fiche card 5
SERVICE MANUAL:

COMMENTS:


 

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