McCulloch Model 49
Model: 49 

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MANUFACTURED BY:  McCULLOCH MOTORS CORP.
  LOS ANGELES, CALIFORNIA, U.S.A.
SERIES OR ASSEMBLY NUMBER:  
YEAR INTRODUCED:  February
YEAR DISCONTINUED:  April 1957
ENGINE DISPLACEMENT:  5.3 cu. in. (87cc)
NUMBER OF CYLINDERS:  1
CYLINDER BORE:  2.125 in. (54mm)
PISTON STROKE:  1.500 in. (38mm)
CYLINDER TYPE:  Aluminum with cast iron sleeve
INTAKE METHOD:  Rotary valve
MANUFACTURER ADVERTISED H.P.:  4
WEIGHT :  30 lbs. (13.6kg)

OPERATOR CONFIGURATION:  One Man operation
HANDLEBAR SYSTEM:  Rigid
CHAIN BRAKE:  none
CLUTCH:  Centrifugal
DRIVE TYPE:  Gear reduction
CONSTRUCTION:  Die cast magnesium/aluminum alloy
MAGNETO TYPE:  McCulloch
CARBURETOR:  Tillotson HL series
MAJOR REPAIR KIT:  
MINOR REPAIR KIT:  
AIR FILTER SYSTEM:  Flocked wire screen
STARTER TYPE:  McCulloch automatic rewind
OIL PUMP:  Manual
OPERATING RPM:  
IGNITION TIMING:  fixed
BREAKER POINT SETTING:  Just breaking with timing pin inserted in timing hole
FLYWHEEL/COIL AIR GAP:  
SPARK PLUG TYPE:  Champion J8J
SPARK PLUG GAP:  0.025 in. (0.63mm)
CRANKSHAFT MAIN BEARINGS:  Caged roller and ball types
FUEL TANK CAPACITY:  
FUEL OIL RATIO:  16:1, 1/2 pint oil to 1 gallon fuel
RECOMMENDED FUEL OCTANE:  Regular
MIX OIL SPECIFICATION:  McCulloch two-cycle chain saw mix
CHAIN PITCH:  1/2 in., .500" (12.7mm)
CHAIN TYPE:  McCulloch
BAR MOUNT PATTERN:  
SHORTEST GUIDE BAR SUPPLIED:  18 in. (45 cm)
LONGEST GUIDE BAR SUPPLIED:  36 in. (91 cm)
COLOUR SCHEME:  McCulloch Yellow enamel