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Model: CS-550EVL

MANUFACTURED BY:
ECHO (KIORITZ CORPORATION)
TOKYO, Japan
SERIES OR ASSEMBLY NUMBER:
CS-550EVL, CS-550EVLP
YEAR INTRODUCED:
1983
YEAR DISCONTINUED:
1990
ENGINE DISPLACEMENT:
54.7 cc (3.34 cu. in.)
NUMBER OF CYLINDERS:
Air cooled, two-stroke, single cylinder gasoline engine
CYLINDER BORE:
44 mm (1.65 in.)
PISTON STROKE:
36 mm (1.42 in.)
PISTON RING THICKNESS:
2 rings
CYLINDER TYPE:
Aluminum with chrome plated bore
INTAKE METHOD:
Piston ported
MANUFACTURER ADVERTISED H.P.:
not advertised
WEIGHT:
6 kg (13.1 lbs.) powerhead only
OPERATOR CONFIGURATION:
One Man operation
HANDLEBAR SYSTEM:
Anti-vibration
CHAIN BRAKE:
Mechanical
CLUTCH:
Centrifugal, 3 metal shoes
DRIVE TYPE:
Direct
CONSTRUCTION:
Die cast magnesium, injection molded polymer
MAGNETO TYPE:
Electronic CD type
CARBURETOR:
Walbro HDA
MAJOR REPAIR KIT:
K10-HDA
MINOR REPAIR KIT:
D10-HDA
AIR FILTER SYSTEM:
Nylon mesh cartridge
STARTER TYPE:
Automatic rewind. Replacement cord 4X950 mm
OIL PUMP:
Automatic, worm gear driven
MAXIMUM ENGINE RPM:
11,000 to 12,000, operating range 5,500 to 9,000
IDLE RPM:
2,200 to 2,800
IGNITION TIMING:
fixed
BREAKER POINT SETTING:
none
FLYWHEEL/COIL AIR GAP:
0.4 mm (0.016 in.)
SPARK PLUG TYPE:
Champion CJ7Y, NGK BPM7A
SPARK PLUG GAP:
0.63 mm (0.025 in.
CRANKSHAFT MAIN BEARINGS:
Ball, 6202
FUEL TANK CAPACITY:
500 ML (16.9 fl. oz.)
FUEL OIL RATIO:
50:1 with ECHO oil, otherwise 32:1
RECOMMENDED FUEL OCTANE:
89 regular automotive.
ASPEN2 pre-mixed Alkylate fuel is
best at 93 octane, no ethanol, has very long shelf life
MIX OIL SPECIFICATION:
ECHO two cycle. ISO-L-EDG. Jaso M345/FD
ASPEN Synthetic mix oil is best
CHAIN PITCH:
3/8 in.
CHAIN TYPE:
Oregon 72
BAR MOUNT PATTERN:
10 link
SHORTEST GUIDE BAR SUPPLIED:
40 cm (16 in.)
LONGEST GUIDE BAR SUPPLIED:
61 cm (24 in.)
COLOUR SCHEME:
Orange with black air filter cover
PAINT CODES:
ILLUSTRATED PARTS LIST:
SERVICE MANUAL:

COMMENTS:

 

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