MANUFACTURED BY: |  | STIHL ANDREAS MASCHINENFABRIK |
 | | STUTTGART, GERMANY |
SERIES OR ASSEMBLY NUMBER: | | 1121.
026W, 026C, 026 Pro, 026WVH, 026 Arctic |
SERIAL NUMBER PREFIX: | | |
YEAR INTRODUCED: | | 1993 |
YEAR DISCONTINUED: | | |
ENGINE DISPLACEMENT: | | 48.7 ccm |
NUMBER OF CYLINDERS: | | 1 |
CYLINDER BORE: | | 44 mm |
PISTON STROKE: | | 32 mm |
PISTON RING THICKNESS: | | 44 X 1.2 mm |
CYLINDER TYPE: | | Aluminum with Chrome plated bore |
INTAKE METHOD: | | Piston ported |
MANUFACTURER ADVERTISED H.P.: | | |
WEIGHT: | | 4.7 kg, 10.7 lbs.) powerhead only |
OPERATOR CONFIGURATION: | | One Man |
HANDLEBAR SYSTEM: | | Anti-vibration |
CHAIN BRAKE: | | Inertia activated |
CLUTCH: | | Centrifugal, 3 shoe metal |
DRIVE TYPE: | | Direct |
CONSTRUCTION: | | Die cast magnesium, injection molded polymer |
MAGNETO TYPE: | | Electronic |
CARBURETOR: | | Walbro WT-403A (USA) |
MAJOR REPAIR KIT: | | 1121 007 1062 |
MINOR REPAIR KIT: | | |
AIR FILTER SYSTEM: | | Nylon mesh element, or cellulose fiber element |
STARTER TYPE: | | Stihl automatic rewind. Rope 3.5 mm
Regular starter rope length 960mm. Elastostart 30.5 m |
OIL PUMP: | | Automatic |
MAXIMUM ENGINE RPM: | | |
IDLE RPM: | | 2,800 |
IGNITION TIMING: | | fixed |
BREAKER POINT SETTING: | | none |
FLYWHEEL/COIL AIR GAP: | | |
SPARK PLUG TYPE: | | NGK BPMR7A |
SPARK PLUG GAP: | | 0.5 mm (0.020 in.) |
CRANKSHAFT MAIN BEARINGS: | | Ball |
FUEL TANK CAPACITY: | | 460 ml (.97 US Pin |
FUEL OIL RATIO: | | 50:1 |
RECOMMENDED FUEL OCTANE: | | |
MIX OIL SPECIFICATION: | | |
CHAIN PITCH: | | .325 in. optional 3/8 in. |
CHAIN TYPE: | | RM2 |
BAR MOUNT PATTERN: | | 31 link |
SHORTEST GUIDE BAR SUPPLIED: | | 40 cm (16 in.) |
LONGEST GUIDE BAR SUPPLIED: | | 50 cm (20 in.) |
COLOUR SCHEME: | | |
PAINT CODES: | | |
ILLUSTRATED PARTS LIST: | | |
SERVICE MANUAL: | | |