MANUFACTURED BY: |  | STIHL ANDREAS MASCHINENFABRIK |
 | | STUTTGART, GERMANY |
SERIES OR ASSEMBLY NUMBER: | | 1122 |
SERIAL NUMBER PREFIX: | | |
YEAR INTRODUCED: | | 1988 |
YEAR DISCONTINUED: | | 2003 |
ENGINE DISPLACEMENT: | | 91.6 ccm (5.58 cu. in.) |
NUMBER OF CYLINDERS: | | 1 |
CYLINDER BORE: | | 54 mm |
PISTON STROKE: | | 40 mm |
PISTON RING THICKNESS: | | 1.5 mm, 2 rings used |
CYLINDER TYPE: | | Aluminum with Chrome plated bore |
INTAKE METHOD: | | Piston ported |
MANUFACTURER ADVERTISED H.P.: | | 6.8 B.H.P. (5.5 kw) |
WEIGHT: | | 7.3 kg (16.1 lbs. dry powerhead only |
OPERATOR CONFIGURATION: | | One Man operation |
HANDLEBAR SYSTEM: | | Anti-vibration |
CHAIN BRAKE: | | Inertia activated |
CLUTCH: | | Centrifugal |
DRIVE TYPE: | | Direct |
CONSTRUCTION: | | Die cast Magnesium housings |
MAGNETO TYPE: | | Electronic flywheel type |
CARBURETOR: | | Tillotson HS series |
MAJOR REPAIR KIT: | | RK-23HS |
MINOR REPAIR KIT: | | DG-5HS/T |
AIR FILTER SYSTEM: | | Wire mesh screen, HD options available |
STARTER TYPE: | | Automatic rewind |
OIL PUMP: | | Automatic, adjustable |
MAXIMUM ENGINE RPM: | | 13,000 |
IDLE RPM: | | 2,500 |
IGNITION TIMING: | | fixed |
BREAKER POINT SETTING: | | breakerless |
FLYWHEEL/COIL AIR GAP: | | fixed |
SPARK PLUG TYPE: | | Bosch WSR6F, NGK BPMR7A |
SPARK PLUG GAP: | | 0.5 mm (0.020 in.) |
CRANKSHAFT MAIN BEARINGS: | | Ball |
FUEL TANK CAPACITY: | | 840 ml (1.77 U.S. pint) |
FUEL OIL RATIO: | | 50:1 |
RECOMMENDED FUEL OCTANE: | | Regular grade |
MIX OIL SPECIFICATION: | | Stihl |
CHAIN PITCH: | | 3/8 in. or .404 in. |
CHAIN TYPE: | | Stihl |
BAR MOUNT PATTERN: | | 31 link |
SHORTEST GUIDE BAR SUPPLIED: | | 40 cm (16 in.) |
LONGEST GUIDE BAR SUPPLIED: | | 90 cm (36 in.) |
COLOUR SCHEME: | | Stihl Grey with Orange top cover and air filter cover |
PAINT CODES: | | |
ILLUSTRATED PARTS LIST: | | |
SERVICE MANUAL: | | |