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Model: 280S

MANUFACTURED BY:
HUSQVARNA VAPENFABRIKS AB
HUSKVARNA, SWEDEN
SERIES OR ASSEMBLY NUMBER:
YEAR INTRODUCED:
1971
YEAR DISCONTINUED:
ENGINE DISPLACEMENT:
77cc (4.7 cu. in.)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
52mm (2.05 in.)
PISTON STROKE:
36mm (1.42 in.)
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with chrome plated bore
INTAKE METHOD:
Piston ported
MANUFACTURER ADVERTISED H.P.:
WEIGHT:
7.5 kg
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Anti-vibration
CHAIN BRAKE:
Yes
CLUTCH:
Centrifugal
DRIVE TYPE:
Direct
CONSTRUCTION:
Die cast magnesium
MAGNETO TYPE:
Breaker point
CARBURETOR:
Tillotson HS-122A series
MAJOR REPAIR KIT:
RK-23HS
MINOR REPAIR KIT:
DG-5HS/T
AIR FILTER SYSTEM:
Nylon mesh cartridge
STARTER TYPE:
Husqvarna automatic rewind
OIL PUMP:
Automatic, adjustable
MAXIMUM ENGINE RPM:
IDLE RPM:
IGNITION TIMING:
Mark on stator should align with mark on crankcase
BREAKER POINT SETTING:
0.3 to 0.4mm (0.012 to 0.016 in.)
FLYWHEEL/COIL AIR GAP:
0.3 mm (0.012 in.)
SPARK PLUG TYPE:
Bosch WS7F or Champion CJ7Y
SPARK PLUG GAP:
0.5mm (0.020 in.)
CRANKSHAFT MAIN BEARINGS:
Ball
FUEL TANK CAPACITY:
FUEL OIL RATIO:
40:1
RECOMMENDED FUEL OCTANE:
Regular
MIX OIL SPECIFICATION:
Two-stroke chain saw mix oil
CHAIN PITCH:
3/8 in.
CHAIN TYPE:
BAR MOUNT PATTERN:
17 link
SHORTEST GUIDE BAR SUPPLIED:
40cm (16 in.)
LONGEST GUIDE BAR SUPPLIED:
COLOUR SCHEME:
Husqvarna Orange enamel
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:



 

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