Echo CS-550 Service Data
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Echo CS-550 Service Data

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01-54B-00
SERVICE DATA
(Serial number : 37000001 and after)
INTRODUCTION
We are constantly working on technical im-
provement of our products. For this reason,
technical data, equipment and design are
subject to change without notice. All speci-
fications and directions in this SERVICE
DATA are based on the latest product infor-
mation available at the time of publication.
ECHO SERVICE MANUAL Ord. 401-31
(Model : CS-600) contains additional infor-
mation for servicing this model.
CS-550

CHAIN SAW

CS-550
ECHO:
STAGE
MODEL
CONTENTS
1 SERVICE INFORMATION .............................. 2
1-1 Specifi cation ............................................... 2
1-2 Technical data ............................................. 3
1-3 Torque limits................................................ 4
1-4 Special repairing materials ......................... 5
1-5 Service limits............................................... 6
1-6 Special tools ............................................... 7
2-1 General adjusting rules ............................... 8
and H mixture needle ....................................... 8
2-3 Adjusting carburettor................................... 9
Reference No.
I S S U E D :
1
0
page
01-54B-00
2 0 1 1 0 2

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Summary of Contents for Echo CS-550

  • Page 1: Table Of Contents

    1-6 Special tools ..........7 mation available at the time of publication. 2 CARBURETTOR ADJUSTMENT PROCEDURE .. 8 ECHO SERVICE MANUAL Ord. 401-31 2-1 General adjusting rules ....... 8 (Model : CS-600) contains additional infor- 2-2 Presetting Idle adjust screw, L mixture needle mation for servicing this model.

  • Page 2: Service Information

    SERVICE INFORMATION CS-550 1 SERVICE INFORMATION 1-1 Specifi cations Dimensions Length mm(in) 448 (17.64) Width mm(in) 253 (9.96) Height mm(in) 284 (11.18) Dry weight* kg(lb) 6.0 (13.2) Engine Type YAMABIKO, stratifi ed scavenging, air-cooled, two-stroke, single cylinder Ventilated piston, Semi-automatic decompression...

  • Page 3: Technical Data

    CS-550 SERVICE INFORMATION Oregon Saw chain 73LGX Cutting devices Guide bar Part No. 40RV58-3/8E 45RV58-3/8E 50RV58-3/8E Called length Gauge 0.058 Saw chain Number of drive links Pitch Gauge 0.058 1-2 Technical data Engine Idling speed r/min 2,800 +/- 200 Wide open throttle speed*...

  • Page 4: Torque Limits

    SERVICE INFORMATION CS-550 1-3 Torque limits Descriptions Size kgf•cm N•m in•lbf Starter pawl 60 - 100 6 - 10 50 - 90 Starter system Starter case 30 - 50 3 - 5 25 - 45 Brake lever side 70 - 90...

  • Page 5: Special Repairing Materials

    Starter case Brake lever side Starter center shaft screw Loctite #222, ThreeBond #1342 or equivalent Grease Auto-oiler worm Clutch needle bearing Rubber cushion, inside Lithium based grease or ECHO XTended Choke knob Protection Lubricant Rewind spring Oil seal inner lips Starter center shaft...

  • Page 6: Service Limits

    SERVICE INFORMATION CS-550 1-5 Service Limits 5K253 5K083 5K084 5K081 5K082 5K016 5K025 5K254 5K097 5K173 5K174 5K181 5K181 5K097 Description mm (in) Cylinder bore When plating is worn and aluminum can be seen Piston outer diameter Min. 44. 89 (1.767) Piston pin bore Max.

  • Page 7: Special Tools

    CS-550 SERVICE INFORMATION 1-6 Special tools b = 6 mm b = 4 mm b = 5 mm b = 6 mm PET-9000 OPPAMA INTEGRATED IGNITION ANALYZER Key Part Number Description Used for: G310-000050 Tachometer PET-304 Measuring engine speed to adjust carburettor...

  • Page 8: Carburettor Adjustment Procedure

    SERVICE INFORMATION CS-550 2 CARBURETTOR ADJUSTMENT PROCEDURE 2-1 General adjusting rules A. Before adjustment, check the following items. 1. The correct spark plug must be clean and properly gapped. 2. The air fi lter element must be clean and properly installed.

  • Page 9: Adjusting Carburettor

    CS-550 SERVICE INFORMATION 2-3 Adjusting carburettor 1. Start and warm engine for 1 minute alternating engine speed between WOT and idle every 5 sec- onds. Turn H mixture needle (C) anticlockwise until engine speed drops to approx. 12,000 r/min at WOT.

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