Brother International KM-430B Network Users Manual - English - Page 34

[6] THREAD TRIMMER 1. Movable knife position Er, /-- -- 0 0 ( I ) With knife cam lever roller 0 on the periphery of the knife cam, loosen screw 0 and move movable knife 0 so that its corner meets the mark 0 (outside) of the needle plate. - -0 eE, (2) When the power pulley is turned little by little in the rotating direction at the machine stop position (with the work clamp down), knife cam lever claw 0 drops one step further. In this condition, loosen screw 0, and turn stud 0 so that thread retainer 0 contacts the lower thread. * If the above adjustment is incomplete, the lower thread might break due to excessive tension. 2. Moveble knife timing adjustment Late "`-► Early --® -0 135' Loosen bolt and turn knife cam to adjust the movable knife timing so that knife cam lever claw 0 drops into a recess of the knife cam when the shuttle hook point is between 90° and 135° (until it meets the mark© of the shuttle race ring) upon sewing the final stitch. * The timing advances as the knife cam is turned in the rotating direction. 0