99944200553 OPERATIONX7702093407 15© 1/2017 ECHO Inc.ENGLISH5. Carefully fit attachment driveshaft assembly into coupler (B)to decal assembly line (C),making sure that the inner lowerdrive shaft engages the squareupper drive shaft socket.Note: Earlier model PowerHeads may have shortercouplings.Note: Lower bearing housing andhead assembly must be inline with the engine.6. Rotate locater pin (A) ¼ turnclockwise to engage lower shafthole. Insure locater pin is fullyengaged by twisting lower driveshaft. Locater pin should snapflush in coupler. Full engagementwill prevent further shaft rotation.7. Secure lower shaft assembly tocoupler by tightening clampingknob (D).OPERATIONMoving parts can amputate fingers or cause severe injuries. Keephands, clothing and loose objects away from all openings. Alwaysstop engine, disconnect spark plug, and make sure all moving partshave come to a complete stop before removing obstructions, clearingdebris, or servicing unit. Allow unit to cool before performing service.Note: Refer to your Pro Attachment Series or Split Boom Operator'sManuals for correct engine fueling, starting and stoppinginstructions.Operating Techniques1. Hold unit on your right side resting sweeper brushes on work surface.2. Firmly grasp throttle grip with right hand and front handle with left hand.BACDA