MANUFACTURED BY: |  | ROPER Co. |
 | | BRADLEY, ILLINOIS, U.S.A. |
SERIES OR ASSEMBLY NUMBER: | | C12131R, 12147R |
SERIAL NUMBER PREFIX: | | |
YEAR INTRODUCED: | | |
YEAR DISCONTINUED: | | |
ENGINE DISPLACEMENT: | | 1.9 cu. in. (31cc) |
NUMBER OF CYLINDERS: | | 1 |
CYLINDER BORE: | | 1.375 in. |
PISTON STROKE: | | 1.28125 in. |
PISTON RING THICKNESS: | | |
CYLINDER TYPE: | | Aluminum with chrome plated bore |
INTAKE METHOD: | | Reed valve |
MANUFACTURER ADVERTISED H.P.: | | Not advertised |
WEIGHT: | | |
OPERATOR CONFIGURATION: | | One Man operation |
HANDLEBAR SYSTEM: | | Rigid |
CHAIN BRAKE: | | none |
CLUTCH: | | Centrifugal |
DRIVE TYPE: | | Direct |
CONSTRUCTION: | | |
MAGNETO TYPE: | | Flywheel magneto |
CARBURETOR: | | Tillotson HS |
MAJOR REPAIR KIT: | | |
MINOR REPAIR KIT: | | |
AIR FILTER SYSTEM: | | |
STARTER TYPE: | | Automatic rewind |
OIL PUMP: | | Manual and Automatic |
MAXIMUM ENGINE RPM: | | |
IDLE RPM: | | |
IGNITION TIMING: | | Fixed |
BREAKER POINT SETTING: | | 0.015 in. (0.38 mm.) |
FLYWHEEL/COIL AIR GAP: | | 0.005 to 0.010 in. |
SPARK PLUG TYPE: | | Champion DJ6J |
SPARK PLUG GAP: | | 0.025 in. (0.63 mm) |
CRANKSHAFT MAIN BEARINGS: | | Caged needle roller |
FUEL TANK CAPACITY: | | |
FUEL OIL RATIO: | | 16:1 |
RECOMMENDED FUEL OCTANE: | | Regular grade |
MIX OIL SPECIFICATION: | | Chain Saw mix oil |
CHAIN PITCH: | | |
CHAIN TYPE: | | |
BAR MOUNT PATTERN: | | |
SHORTEST GUIDE BAR SUPPLIED: | | |
LONGEST GUIDE BAR SUPPLIED: | | |
COLOUR SCHEME: | | |
PAINT CODES: | | |
ILLUSTRATED PARTS LIST: | | |
SERVICE MANUAL: | | |