30 Husqvarna service manual 104 72 30-269 Timing of the hook in relation to the needleRequirementsSwitch on main switch, and set the machine for straightstitching.As the needle is moving upward the tip of the hookshould pass the centre line of the needle whenthe needle is 2,5mm above the lower turning position(the distance for forming the loop).CheckRemove the rear cover, the lamp cover and the handwheel.Remove the hook cover.1. Turn the arm shaft by means of the driver pin sothat the needle reaches its lower turning position.2. Place the setting gauge 411 17 52-01 on theneedle bar until the spring-loaded stud (A)touches the needle bar frame and tighten thescrew.3. Move the needle up by pulling the short cog beltin toward the machine until the spring-loadedstud rests against its stop in the gauge, accordingto the figure on the right.The needle has now moved up 2,5mm from theturning position (the distance for forming theloop).Hold the hook back so that it is pushed downwardand backward. The tip of the hook shall now be inthe centre of the needle.Adjustment-Remove the pointed screw (B) and undo the othertwo screws.-Repeat the checking points 1,2 and 3.- Hold the arm shaft and turn the hook and the driverby pulling the short cog belt in toward the machineuntil the tip of the hook comes in front of the centreof the needle.When tightening the screws on the pulley, the pointedscrew should change places with the black screw thatwas unsrewed earlier. Otherwise the pointed screwmight retake its earlier position.Mount the hook cover, the rear cover, the lamp cover and the handwheel.(Note! the position of the handwheel in the screen).CommentsBy moving the needle all the time by means of the short cog belt, thiswill counteract any possible play between the long cog belt and the cog wheels.NOTE!The axial play of the arm shaft might change when loosening the screws.Maximum play may be 0,05 mm.SEWKNITWORLD