INTRODUCTIONWe are constantly working on technical im-provement of our products. For this reason,technical data, equipment and design aresubject to change without notice. All speci-fications and directions in this SERVICEDATA are based on the latest product infor-mation available at the time of publication.ECHO SERVICE MANUAL Ord. 401-31(Model : CS-600) contains lots of informa-tion for servicing this model.SERVICE DATACHAIN SAWECHO: CS-610STAGE MODEL(Serial number : 37000001 and after)CONTENTS page1 SERVICE INFORMATION .............................. 21-1 Specification ............................................... 21-2 Technical data ............................................. 31-3 Torque limits................................................ 41-4 Special repairing materials ......................... 51-5 Service limits............................................... 61-6 Special tools ............................................... 72 CARBURETTOR ADJUSTMENT PROCEDURE .. 82-1 General adjusting rules ............................... 82-2 Presetting Idle adjust screw, L mixture needleand H mixture needle ....................................... 82-3 Adjusting carburettor................................. 10Reference No. 01-59D-00I S S U E D : 2 0 1 2 0 1CS-61001-59D-00 10