Model: 031 AV
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MANUFACTURED BY: STIHL ANDREAS MASCHINENFABRIK
STUTTGART, GERMANY
SERIES OR ASSEMBLY NUMBER: 1113
YEAR INTRODUCED: 1971
YEAR DISCONTINUED:
ENGINE DISPLACEMENT: 48ccm (2.93 cu. in.)
NUMBER OF CYLINDERS: 11
CYLINDER BORE: 44mm (1.73 in.)
PISTON STROKE: 32mm (1.26 in.)
CYLINDER TYPE: Aluminum with chrome plated bore
INTAKE METHOD: Piston ported
MANUFACTURER ADVERTISED H.P.:
WEIGHT : 6.6 kg (14.5 lbs.) powerhead only
OPERATOR CONFIGURATION: One Man operation
HANDLEBAR SYSTEM: Anti-vibration
CHAIN BRAKE: Optional
CLUTCH: Centrifugal
DRIVE TYPE: Direct
CONSTRUCTION: Die cast magnesium
MAGNETO TYPE: Bosch flywheel magneto later series Transistorized
CARBURETOR: Tillotson HU-3C, G series
MAJOR REPAIR KIT: RK-14HU
MINOR REPAIR KIT: DG-2HU
AIR FILTER SYSTEM: Nylon mesh cartridge
STARTER TYPE: Stihl automatic rewind
OIL PUMP: Automatic
OPERATING RPM:
IGNITION TIMING: 2.0 to 2.3mm (0.008 to 0.009 in.) before TDC
BREAKER POINT SETTING: 0.35 to 0.40mm (0.014 to 0.016 in.)
FLYWHEEL/COIL AIR GAP:
SPARK PLUG TYPE: Bosch WSR6F, Champion RCJ7Y
SPARK PLUG GAP: 0.51mm (0.020 in.)
CRANKSHAFT MAIN BEARINGS: Ball
FUEL TANK CAPACITY: 540ml (18.25 fl. oz.)
FUEL OIL RATIO: 40:1 with Stihl oil
RECOMMENDED FUEL OCTANE: Regular
MIX OIL SPECIFICATION: Stihl two-cycle chain saw mix oil
CHAIN PITCH: 3/8 in.
CHAIN TYPE: Stihl
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED: 35cm (14 in.)
LONGEST GUIDE BAR SUPPLIED: 50cm (20 in.)
COLOUR SCHEME: Grey with Orange top cover
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:
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COMMENTS: Model 031AVQ equipped with chain brake
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from:
http://www.acresinternet.com/cscc.nsf/GasbyManufacturer?OpenView&Start=117&Count=30&Expand=121#121
and a pdf workshop manual:
Stihl 030, 031, 032 Workshop Manual-
http://www.mediafire.com/?dnwykggj3jy
scanned paper copy, so it is rough.
Click on the blue 'Click here to start download...' link on left.