Echo PB-251, Service Data

     PB-251, PB-255ES, ES-255ES

21-25F-00

1

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 products infor-
mation available at the time of publication. 

2

CONTENTS

page

1 SERVICE INFORMATION

 .............................. 2

1-1 Speci

fi

 cation ............................................... 2 

1-2 Technical data ............................................. 3
1-3 Torque limits................................................ 4
1-4  Special repairing materials ......................... 4
1-5 Service limits............................................... 5
1-6 Special tools ............................................... 6

2 CARBURETTOR ADJUSTMENT PROCEDURE

 .. 7

2-1  General adjusting rules ............................... 7
2-2  Presetting idle adjust screw, idle mixture needle 
and hi speed (H) mixture needle .......................... 7
2-3 Adjusting carburettor................................... 8

Reference No.

21-25F-00

I S S U E D :     2 0 0 8 0 1

INDEX