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Model: 481

MANUFACTURED BY:
OLEO-MAC
REGGIO EMILIA, ITALY
SERIES OR ASSEMBLY NUMBER:
32
SERIAL NUMBER PREFIX:
YEAR INTRODUCED:
YEAR DISCONTINUED:
ENGINE DISPLACEMENT:
81cc (5.0 cu. in.
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
52mm (2.04 in.)
PISTON STROKE:
38mm (1.50 in.)
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with chrome impregnated bore
INTAKE METHOD:
Piston ported
MANUFACTURER ADVERTISED H.P.:
9 SAE
WEIGHT:
8.7kg with 46cm bar & chain)
19.2 lbs. with 18 in bar & chain
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Rigid
CHAIN BRAKE:
none
CLUTCH:
Centrifugal, engages @ 3000 rpm
DRIVE TYPE:
Direct
CONSTRUCTION:
Die cast magnesium
MAGNETO TYPE:
CEV
CARBURETOR:
Tillotson HS-171A, HS-199A or Walbro WJ-30-1
MAJOR REPAIR KIT:
RK-23HS for Tillotson
K15-WJ for Walbro
MINOR REPAIR KIT:
DG-5HS/T for Tillotson
D11-WJ for Walbro
AIR FILTER SYSTEM:
Flocked wire screen
STARTER TYPE:
Automatic rewind
OIL PUMP:
Automatic, worm gear driven, adjustable
MAXIMUM ENGINE RPM:
IDLE RPM:
IGNITION TIMING:
2.6mm (0.102 in.) before TDC
BREAKER POINT SETTING:
0.45mm (0.017 in.)
FLYWHEEL/COIL AIR GAP:
SPARK PLUG TYPE:
Bosch WS7F, Chamion CJ7Y
SPARK PLUG GAP:
0.51mm (0.020 in.)
CRANKSHAFT MAIN BEARINGS:
Ball
FUEL TANK CAPACITY:
1 litre (35.18 Imp. Oz.)
FUEL OIL RATIO:
20:1
RECOMMENDED FUEL OCTANE:
Regular
MIX OIL SPECIFICATION:
Castrol two-stroke chain saw mix oil
CHAIN PITCH:
3/8 in.
CHAIN TYPE:
Windsor
BAR MOUNT PATTERN:
SHORTEST GUIDE BAR SUPPLIED:
40cm (16 in.)
LONGEST GUIDE BAR SUPPLIED:
81cm (32 in.)
COLOUR SCHEME:
Orange enamel with Black handles and top cover
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:



 

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