MANUFACTURED BY:PM (Power Machinery Ltd.)VANCOUVER, BRITISH COLUMBIA, CANADA
SERIES OR ASSEMBLY NUMBER:
YEAR INTRODUCED:1949
YEAR DISCONTINUED:
ENGINE DISPLACEMENT:5.5 cu. in. (90 cc)
NUMBER OF CYLINDERS:1
CYLINDER BORE:2 in. (50.8 mm)
PISTON STROKE:1.75 in. (44.4 mm)
CYLINDER TYPE:Cast nickel grey iron
INTAKE METHOD:Reed valve
MANUFACTURER ADVERTISED H.P.:4 H.P. (B.B.H.P. 2.5)
WEIGHT :36 lbs. with 20 in. bar & chain
OPERATOR CONFIGURATION:One man operation
HANDLEBAR SYSTEM:Rigid (clutch activated by turning either front handle)
CHAIN BRAKE:none
CLUTCH:Manual, dry plate type
DRIVE TYPE:Roller chain reduction
CONSTRUCTION:Sand cast magnesium
MAGNETO TYPE:Wico FWS-18 on saws up to serial 14,999.
Wico FW2146 ON SAWS Starting serial 15,000
CARBURETOR:Tillotson AJ-13B up to serial number 13902
Tillotson MD-44A float type from 13903 up
MAJOR REPAIR KIT:nla
MINOR REPAIR KIT:nla
AIR FILTER SYSTEM:Brass screen
STARTER TYPE:Automatic rewind with steel cable
OIL PUMP:Manual
OPERATING RPM:3800
IGNITION TIMING:
BREAKER POINT SETTING:.018 in. to .020 in. (.45 to .5 mm)
FLYWHEEL/COIL AIR GAP:fixed
SPARK PLUG TYPE:Champion J-8 (PM # 10252)
SPARK PLUG GAP:.025 in. (0.63 mm)
CRANKSHAFT MAIN BEARINGS:Ball type
FUEL TANK CAPACITY:1 Imperial Quart, =40 oz. (1.18 litres)
FUEL OIL RATIO:1 pint of oil to 1 gallon Imperial measure
RECOMMENDED FUEL OCTANE:Regular grade
MIX OIL SPECIFICATION:SAE 50
CHAIN PITCH:9/16 in.
CHAIN TYPE:PM No. 3 Standard
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED:14 in. (35.5cm)
LONGEST GUIDE BAR SUPPLIED:26 in. (66cm)
COLOUR SCHEME:Red wrinkle finish enamel