MANUFACTURED BY: |  | WRIGHT POWER SAW & TOOL Corp. |
 | | STRATFORD, CONN. U.S.A. |
SERIES OR ASSEMBLY NUMBER: | | |
SERIAL NUMBER PREFIX: | | |
YEAR INTRODUCED: | | 1957 |
YEAR DISCONTINUED: | | 1958 |
ENGINE DISPLACEMENT: | | 4.51 cu. in. (73.9 cc) |
NUMBER OF CYLINDERS: | | 1 |
CYLINDER BORE: | | 2.0 in. (50.8 mm) |
PISTON STROKE: | | 1.4375 in. (36.5 mm) |
PISTON RING THICKNESS: | | |
CYLINDER TYPE: | | Aluminum with cast iron sleeve |
INTAKE METHOD: | | Reed valves |
MANUFACTURER ADVERTISED H.P.: | | not advertised |
WEIGHT: | | 19 lbs. (8.6 kg) complete |
OPERATOR CONFIGURATION: | | One Man operation |
HANDLEBAR SYSTEM: | | Rigid |
CHAIN BRAKE: | | none |
CLUTCH: | | none |
DRIVE TYPE: | | Direct |
CONSTRUCTION: | | Die cast magnesium |
MAGNETO TYPE: | | Phelon flywheel magneto |
CARBURETOR: | | Carter float type with wick elements on early version
Tillotson HL-9A series on late versions |
MAJOR REPAIR KIT: | | |
MINOR REPAIR KIT: | | |
AIR FILTER SYSTEM: | | Skinner ribbon element |
STARTER TYPE: | | Fairbanks Morse automatic rewind |
OIL PUMP: | | none used |
MAXIMUM ENGINE RPM: | | 4800 to 5200 with governor |
IDLE RPM: | | |
IGNITION TIMING: | | 0.125 in. (3.17 mm) before TDC |
BREAKER POINT SETTING: | | 0.020 in. (0.51 mm) |
FLYWHEEL/COIL AIR GAP: | | position is fixed |
SPARK PLUG TYPE: | | Champion J11J |
SPARK PLUG GAP: | | 0.025 in. (0.63 mm) |
CRANKSHAFT MAIN BEARINGS: | | Ball |
FUEL TANK CAPACITY: | | |
FUEL OIL RATIO: | | 1/2 pint to 1 gallon = 16:1 |
RECOMMENDED FUEL OCTANE: | | Regular unleaded |
MIX OIL SPECIFICATION: | | SAE 30 non detergent |
CHAIN PITCH: | | not used |
CHAIN TYPE: | | not used |
BAR MOUNT PATTERN: | | |
SHORTEST GUIDE BAR SUPPLIED: | | |
LONGEST GUIDE BAR SUPPLIED: | | 18 in. (45 cm) |
COLOUR SCHEME: | | |
PAINT CODES: | | |
ILLUSTRATED PARTS LIST: | | |
SERVICE MANUAL: | | |