3 - 9Rotary hook drive mechanism / Feed and bobbinMain unitAssembly4 Lower shaft A attachment1. Rotate the lower shaft, and bring the needle bar to its highest point 1(lower shaft pulley base line forward).2. Insert lower shaft A.*Key point• Face the screw hole 2 in the joint forward, and attach thetiming belt 3 to timing pulley D 4.3. Attach the 2 bushing pressers 5 using the 2 screws 1.1 Torque1.47 – 1.96 N·m12Lower shaftpulley base line5 4 31Taptite, Bind SM4X105 feed module attachment1. Rotate the lower shaft, and bring the needle bar to its highest point (lowershaft pulley base line forward).2. Apply EPNOC AP(N)0 to the disk 1, and attach it to the lower shaft joint.3. Rotate feed module lower shaft B, and bring the solid dot on the outerrotary hook to the front, directly above the D cut in lower shaft B.4. Attach the feed module attachment.*Key point• The needle bar should be at the highest point.• The solid circle mark on the outer rotary hook should beforward.• (Feed module side) D cut in lower shaft B is directly above5. Attach the 2 screws 1.*Key point• While holding the feed module against the bottom, tighten thescrew 1 on the left.6. Move the lower shaft A joint to the left, and fully tighten the 2 screws 2.Application of EPNOC AP(N)0 to joint contact area Small amountXC8387***1 Torque1.18 – 1.57 N·m2 Torque1.47 – 1.96 N·mPush againstthe bottom.Move the jointto the left.112Solid circle markD cut surfaceScrewM4Set Screw, Socket (FT)M5X5
