MANUFACTURED BY: |  | SKIL CORPORATION |
 | | CHICAGO, ILLINOIS, U.S.A. |
SERIES OR ASSEMBLY NUMBER: | | 1630, 1631 |
SERIAL NUMBER PREFIX: | | |
YEAR INTRODUCED: | | 1969 |
YEAR DISCONTINUED: | | |
ENGINE DISPLACEMENT: | | 4.2 cu. in. (69cc) |
NUMBER OF CYLINDERS: | | 1 |
CYLINDER BORE: | | 2.0625 in. (52.3 mm) |
PISTON STROKE: | | 1.25 in. (31.7 mm) |
PISTON RING THICKNESS: | | |
CYLINDER TYPE: | | Aluminum with chrome plated bore |
INTAKE METHOD: | | Piston ported |
MANUFACTURER ADVERTISED H.P.: | | |
WEIGHT: | | 13.6 lbs. powerhead |
OPERATOR CONFIGURATION: | | One Man operation |
HANDLEBAR SYSTEM: | | Rigid |
CHAIN BRAKE: | | none |
CLUTCH: | | Centrifugal |
DRIVE TYPE: | | Direct |
CONSTRUCTION: | | Sand cast magnesium |
MAGNETO TYPE: | | Wico |
CARBURETOR: | | Tillotson HS |
MAJOR REPAIR KIT: | | |
MINOR REPAIR KIT: | | |
AIR FILTER SYSTEM: | | Flocked screen |
STARTER TYPE: | | Fairbanks Morse automatic rewind |
OIL PUMP: | | Manual |
MAXIMUM ENGINE RPM: | | |
IDLE RPM: | | |
IGNITION TIMING: | | Fixed |
BREAKER POINT SETTING: | | 0.015 in. |
FLYWHEEL/COIL AIR GAP: | | Position is fixed |
SPARK PLUG TYPE: | | Champion J6J, Autolite A3X, AC M44C |
SPARK PLUG GAP: | | 0.025 in. |
CRANKSHAFT MAIN BEARINGS: | | Ball |
FUEL TANK CAPACITY: | | 1.85 pints |
FUEL OIL RATIO: | | 16:1 |
RECOMMENDED FUEL OCTANE: | | Regular |
MIX OIL SPECIFICATION: | | Two-cycle chain saw mix oil |
CHAIN PITCH: | | .375 in. |
CHAIN TYPE: | | Oregon 73D |
BAR MOUNT PATTERN: | | |
SHORTEST GUIDE BAR SUPPLIED: | | 15 in. (38 cm) |
LONGEST GUIDE BAR SUPPLIED: | | 24 in. (60 cm) |
COLOUR SCHEME: | | Orange enamel |
PAINT CODES: | | |
ILLUSTRATED PARTS LIST: | | |
SERVICE MANUAL: | | |