Janome HD3000, Servicing Manual

Page 1: ...SERVICING MANUAL HD 3000...

Page 2: ...GHT 11 ADJUSTMENT OF CLEARANCE BETWEEN NEEDLE AND ROTARY HOOK 12 ADJUSTMENT OF BACKLASHES BETWEEN HOOK DRIVE SHAFT GEAR AND LOWER SHAFT GEAR 13 ADJUSTMENT OF NEEDLE BAR HEIGHT 14 ADJUSTMENT OF HOOK TI...

Page 3: ...wo set screws B and C 2 Raise the carrying handle lift the top cover unit and separate the carrying handle stays from each pin by pushing them from both sides 3 Detach the top cover unit together with...

Page 4: ...sengage its convex part from the carrying handle supporter plate and detach the belt cover To attach 4 Engage the convex part of the belt cover with the carrying handle supporter plate fit the rib to...

Page 5: ...o attach 3 Insert the base while tilting it and tighten the two set screws D and then three set screws A B and C Bed cover unit To remove 1 Loosen and remove the two set screws E To attach 2 Move the...

Page 6: ...e right side of the front panel and lightly pushing down section F fit the front panel to the lower side of the thread tension dial unit 6 While inserting the pin of the zigzag width lever into the ho...

Page 7: ...the zigzag width to 0 2 Loosen the set screw 3 While turning the balance wheel move the zigzag width rod front until the needle bar ceases to move laterally Pull the zigzag width rod front toward you...

Page 8: ...n socket screws of the upper shaft worm gear 3 While holding the upper shaft worm gear in place carefully turn the balance wheel to make adjustment so that lateral needle swing starts from a position...

Page 9: ...p positions at the maximum zigzag width 1 Remove the top cover unit and set the pattern selector dial at and select the maximum zigzag width 2 Manually turn the balance wheel until the needle is broug...

Page 10: ...equal and 0 2 mm or more at the left and right needle drop positions 1 Set the pattern selector dial at straight stitch 2 Open the face plate and loosen the hexagon socket screw 3 Move the needle bar...

Page 11: ...needle tip is located above the top surface of the needle plate in descending travel at the right needle position 3 Slightly loosen the set screw B lightly press the stopper against the zigzag width...

Page 12: ...wheel to lower the feed dog below the top surface of the needle plate 2 Open the top cover and set the pressure dial at 3 3 Raise the presser foot lifter loosen the set screw of the presser bar bracke...

Page 13: ...e and the rotary hook tip and adjust the clearance between them in a range of 0 10 to 0 05 mm by vertically moving the hook setting plate 6 Turn the balance wheel toward you at the maximum zigzag widt...

Page 14: ...he needle and the rotary hook be sure to check and adjust the backlash 1 Remove the bed cover unit Refer to page 4 2 Loosen the set screw 3 A If the backlash is too much turn the lower shaft bushing i...

Page 15: ...g width 2 Remove the set screw of the needle plate and detach the needle plate and bobbin holder 3 Tilt the head backward and open the face plate 4 Turn the balance wheel toward you until the rotary h...

Page 16: ...ial at and select the maximum zigzag width 3 Loosen the two set screws of the lower shaft gear 4 Turn the balance wheel toward you to move up the needle bar 3 15 to 3 45 mm from its lowest position wi...

Page 17: ...at 3 and lower the presser foot 2 Turn the balance wheel until the feed dog comes to its highest position 3 Detach the bed cover unit 4 Loosen the set screw A and nut 5 Turn the adjusting screw so tha...

Page 18: ...procedure 1 Remove the top cover unit and set the SS adjusting knob at a mark 2 Put a piece of paper under the presser foot and turn the balance wheel to check the needle drop position in forward feed...

Page 19: ...between the presser foot and the feed dog and lower the presser foot lifter 3 Turn the balance wheel toward you to check if the paper is fed forward or backward 4 Loosen the set screw of the feed reg...

Page 20: ...of the BH foot R and check the stitch density on the right and left rows 2 Remove the bed cover unit 3 Loosen the set screw of the feed cam ring with care not to move the ring laterally 4 If the righ...

Page 21: ...r Refer to page 3 2 Loosen the set screw A 3 Make adjustment so that the plate C touches the plate D with the plate B lightly pushed in direction of E and tighten the set screw A 4 Attach the belt cov...

Page 22: ...th a new one take the following procedure To remove 1 Remove the snap ring E 3 2 Pull out the BH lever unit from the shaft To attach 3 Pass the shaft through a new BH lever unit and fasten it with the...

Page 23: ...the figure below and pulled upward the tension should be 85 to 115 g with the thread tension dial set at 3 1 Set the thread tension dial at 3 and pass the thread 2 Open the face plate and lower the p...

Page 24: ...tach the thread tension dial unit To attach 4 Put the thread tension release lever into the rectangular hole in the thread tension releasing plate 2 and attach a new thread tension dial unit with the...

Page 25: ...pushing the thread tension releasing plate 2 in direction A bring the thread tension releasing plate 1 into contact with the tension disc supporter After that tighten the set screw 4 Set the thread te...

Page 26: ...to bring the positioning plate into contact with the roll pin of the needle bar 4 Loosen the set screw of the positioning plate 5 Adjust the threader supporter unit in the vertical direction so that...

Page 27: ...in the vertical direction and in the direction of clearance a Adjustment in vertical direction Loosen the hook set screw tapping screw and let the pin come out by pressing the pushbutton Adjust the h...

Page 28: ...ves in the pushbutton until the knob is brought into close contact with the pushbutton If the threader pin stops halfway avoid forcibly pushing it in because its end is caught in a hole inside the thr...