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Model: 550

MANUFACTURED BY:
PIONEER SAWS LTD.
PETERBOROUGH, ONTARIO, CANADA
SERIES OR ASSEMBLY NUMBER:
YEAR INTRODUCED:
1964
YEAR DISCONTINUED:
1968
ENGINE DISPLACEMENT:
5.45 cu. in. (89ccm)
NUMBER OF CYLINDERS:
1
CYLINDER BORE:
2.25 in. (57mm)
PISTON STROKE:
1.375 in. (35mm)
PISTON RING THICKNESS:
CYLINDER TYPE:
Aluminum with cast iron sleeve
INTAKE METHOD:
Piston ported
MANUFACTURER ADVERTISED H.P.:
not advertised
WEIGHT:
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Rigid
CHAIN BRAKE:
none
CLUTCH:
Centrifugal, flywheel type
DRIVE TYPE:
Direct
CONSTRUCTION:
Die cast Aluminum
MAGNETO TYPE:
Pioneer flywheel type
CARBURETOR:
Tillotson HL-108A series
MAJOR REPAIR KIT:
RK-88HL
MINOR REPAIR KIT:
DG-5HL
AIR FILTER SYSTEM:
Flocked screen
STARTER TYPE:
Pioneer automatic rewind, pinion gear type
OIL PUMP:
Manual
MAXIMUM ENGINE RPM:
IDLE RPM:
IGNITION TIMING:
30 degrees before TDC
BREAKER POINT SETTING:
0.022 in. (0.55mm)
FLYWHEEL/COIL AIR GAP:
0.008 to 0.012 in. (0.2 to 0.3 mm)
SPARK PLUG TYPE:
Champion J8J
SPARK PLUG GAP:
0.025 in. (0.6mm)
CRANKSHAFT MAIN BEARINGS:
Ball
FUEL TANK CAPACITY:
20 oz. (590ml)
FUEL OIL RATIO:
16:1
RECOMMENDED FUEL OCTANE:
Regular
MIX OIL SPECIFICATION:
Two-cycle mix type
CHAIN PITCH:
.400 in.
CHAIN TYPE:
Pioneer C3F or C3G type
BAR MOUNT PATTERN:
01 link
SHORTEST GUIDE BAR SUPPLIED:
16 in.
LONGEST GUIDE BAR SUPPLIED:
20 in.
COLOUR SCHEME:
Forest Green enamel with Pioneer Yellow top cover
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:
had 8 tooth sprocket as standard, rubber grip on front handle, improved porting for 11% more power over model 450, non slip grip on rear handle, rear handle support bracket.



 

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