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Model: 090 AV

MANUFACTURED BY:
STIHL ANDREAS MASCHINENFABRIK
STUTTGART, GERMANY
SERIES OR ASSEMBLY NUMBER:
1109
YEAR INTRODUCED:
YEAR DISCONTINUED:
ENGINE DISPLACEMENT:
137ccm (8.36 cu. in.)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
66mm (2.6 in.)
PISTON STROKE:
40mm (1.57mm)
CYLINDER TYPE:
Aluminum with chrome plated bore
INTAKE METHOD:
Piston ported
MANUFACTURER ADVERTISED H.P.:
WEIGHT:
14.7kg with 53cm bar & chain
32.4 lbs. with 21 in. bar & chain
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Anti-vibration
CHAIN BRAKE:
none
CLUTCH:
Centrifugal
DRIVE TYPE:
Direct
CONSTRUCTION:
Die cast magnesium
MAGNETO TYPE:
Bosch electronic
CARBURETOR:
Tillotson HL-244A, HL-324A series
MAJOR REPAIR KIT:
RK-113HL
MINOR REPAIR KIT:
DG-5HL
AIR FILTER SYSTEM:
Nylon mesh cartridge
STARTER TYPE:
Stihl automatic rewind
OIL PUMP:
Automatic with manual assist
MAXIMUM ENGINE RPM:
8,000
IDLE RPM:
IGNITION TIMING:
fixed
BREAKER POINT SETTING:
none
FLYWHEEL/COIL AIR GAP:
SPARK PLUG TYPE:
Bosch WSR6F
SPARK PLUG GAP:
0.5mm (0.020 in.)
CRANKSHAFT MAIN BEARINGS:
Needle roller
FUEL TANK CAPACITY:
2.29 pints
FUEL OIL RATIO:
40:1 with Stihl oil
RECOMMENDED FUEL OCTANE:
Regular
MIX OIL SPECIFICATION:
Stihl two-cycle chain saw mix oil
CHAIN PITCH:
.404 in. optional 1/2 in.
CHAIN TYPE:
Stihl
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED:
53cm (21 in.)
LONGEST GUIDE BAR SUPPLIED:
150cm (59 in.)
COLOUR SCHEME:
Stihl Grey enamel with Red top cover
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:

Colour photograph 090AV courtesy Martin Pfeiffer

below photographs courtesy Steve Melzer
 

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