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Echo PB-655 Service Data

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21-63G-00
INTRODUCTION
We are constantly working on technical
improvement of our products. For this reason,
technical data, equipment and design are
subject to change without notice. All
specifications and directions in this SERVICE
DATA are based on the latest products
i n f o r m a t i o n a v a i l a b l e a t t h e t i m e o f
publication. ECHO SERVICE MANUAL Ord.
No. 403-12 contains lots of information for
servicing these models.
INDEX
PB-655, PB-755
1 SERVICE INFORMATION ............................. 2
1-1 Specification ............................................... 2
1-2 Technical data ............................................ 3
1-3 Torque limits ............................................... 3
1-4 Special repairing materials ......................... 4
1-5 Service limits .............................................. 5
1-6 Special tools ............................................... 6
2-1 General adjusting rules .............................. 7
2-3 Adjusting carburettor .................................. 8
CONTENTS
21-63G-00
Reference No.
I S S U E D :
2 0 0 7 0 5
1
2
page

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Summary of Contents for Echo PB-655

  • Page 1: Table Of Contents

    ECHO SERVICE MANUAL Ord. 2 CARBURETTOR ADJUSTMENT PROCEDURE . 7 No.

  • Page 2: Service Information

    PB-655 SERVICE INFORMATION PB-755 1 SERVICE INFORMATION 1-1 Specifications Model PB-655 PB-755 Dimensions Length* mm(in) 380 (15.0) Width* mm(in) 480 (18.9) Height* mm(in) 525 (20.7) Dry weight** kg(lb) 11.3 (24.89) 11.9 (26.21) Engine Type KIORITZ, air-cooled, two-stroke, single cylinder Rotation...

  • Page 3: Technical Data

    PB-655 PB-755 SERVICE INFORMATION 1-2 Technical data Model PB-655 PB-755 Engine Idling speed r/min 2400 - 2800 Wide open throttle speed r/min 6800 - 7300 Compression pressure MPa (kgf/cm ) (psi) 1.05 (10.7) (152) Ignition system Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)

  • Page 4: Torque Limits

    PB-655 SERVICE INFORMATION PB-755 1-3 Torque limits Descriptions Size kgf • cm N• m in• lbf Starter Starter pawl assembly M 10 80 - 100 8 - 10 70 - 90 system Starter case M 5*** 35 - 50 3.5 - 5...

  • Page 5: Service Limits

    PB-655 PB-755 SERVICE INFORMATION 1-5 Service limits 5K248 5K249 5K250 5K247 5K251 5K016 5K042 5K252 5K219 5K220 Description mm (in) Cylinder bore When plating is worn and aluminum can be seen Piston outer diameter Min. 47. 95 (1.888) Piston pin bore Max.

  • Page 6: Special Tools

    PB-655 SERVICE INFORMATION PB-755 1-6 Special tools 3: a = 4 4: a = 5 Part Number Description Used for: 897801-33330 Tachometer PET-1000 Measuring engine speed to adjust carburettor 91004 Module air gap gauge Adjusting pole shoe air gaps 895610-79920 L-hex wrench (4 mm)

  • Page 7: Carburettor Adjustment Procedure

    PB-655 PB-755 SERVICE INFORMATION 2 CARBURETTOR ADJUSTMENT PROCEDURE 2-1 General adjusting rules A. Before starting the unit for adjustment, check the following items. 1. The correct spark plug must be clean and properly gapped. 2. The air filter element must be clean and properly installed.

  • Page 8: Adjusting Carburettor

    PB-655 SERVICE INFORMATION PB-755 2-3 Adjusting carburettor 1. Start engine and warm it up alternating engine speed between WOT and idle every 10 seconds for 1 minute. 2. Adjust idle mixture needle with 2.5 mm blade screwdriver (E) to reach maximum engine speed just before drop off.

This manual is also suitable for:

Pb-755

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