MANUFACTURED BY: |  | STIHL ANDREAS MASCHINENFABRIK |
 | | STUTTGART, GERMANY |
SERIES OR ASSEMBLY NUMBER: | | 1121 |
SERIAL NUMBER PREFIX: | | |
YEAR INTRODUCED: | | 1982 |
YEAR DISCONTINUED: | | 1985 |
ENGINE DISPLACEMENT: | | 41.6 ccm (2.54 cu. in.) |
NUMBER OF CYLINDERS: | | 1 |
CYLINDER BORE: | | 42 mm |
PISTON STROKE: | | |
PISTON RING THICKNESS: | | 1.5 mm, 2 rings used |
CYLINDER TYPE: | | Aluminum with Chrome plated bore |
INTAKE METHOD: | | Piston ported |
MANUFACTURER ADVERTISED H.P.: | | |
WEIGHT: | | |
OPERATOR CONFIGURATION: | | One Man operation |
HANDLEBAR SYSTEM: | | Anti-vibration |
CHAIN BRAKE: | | Inertia activated |
CLUTCH: | | Centrifugal, 3 metal shoes |
DRIVE TYPE: | | Direct |
CONSTRUCTION: | | Die cast Magnesium, injection molded Polymer |
MAGNETO TYPE: | | Electronic |
CARBURETOR: | | Tillotson HU-54A, B, E, F |
MAJOR REPAIR KIT: | | RK-14HU for A, B, E
RK-16HU for F |
MINOR REPAIR KIT: | | DG-2HU for A, B, E
DG-3HU for F |
AIR FILTER SYSTEM: | | Nylon mesh element |
STARTER TYPE: | | Stihl automatic rewind, cord 3.5mm X 960mm |
OIL PUMP: | | Automatic |
MAXIMUM ENGINE RPM: | | 13,000 |
IDLE RPM: | | 2,800 |
IGNITION TIMING: | | fixed |
BREAKER POINT SETTING: | | na |
FLYWHEEL/COIL AIR GAP: | | |
SPARK PLUG TYPE: | | |
SPARK PLUG GAP: | | |
CRANKSHAFT MAIN BEARINGS: | | Ball 15X35X13 |
FUEL TANK CAPACITY: | | |
FUEL OIL RATIO: | | |
RECOMMENDED FUEL OCTANE: | | |
MIX OIL SPECIFICATION: | | |
CHAIN PITCH: | | .325 in., 0.050 gauge in Canada, 0.063 in. gauge in USA |
CHAIN TYPE: | | Stihl |
BAR MOUNT PATTERN: | | 31 link |
SHORTEST GUIDE BAR SUPPLIED: | | 38 cm (15 in.) |
LONGEST GUIDE BAR SUPPLIED: | | 50 cm (20 in.) |
COLOUR SCHEME: | | |
PAINT CODES: | | |
ILLUSTRATED PARTS LIST: | | |
SERVICE MANUAL: | | |