Summary of HF2022
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Service manual model hf2022.
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Contents what to do when ................................................................................................................................. 1 - 3 service access face plate ....................................................................................................................
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What to do when condition cause how to fix reference 1. Skipping stitches 1. Needle is not inserted properly. 2. Needle is bent or worn. 3. Incorrectly threaded. 4. Needle or thread is inappropriate for fabric being sewn. 5. Sewing on stretch fabric. 6. Inappropriate needle bar height. 7. Inappropri...
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What to do when condition cause how to fix reference 3. Breaking upper thread 1. Initial sewing speed is too fast. 2. Thread path is incorrect. 3. Needle is bent or dull. 4. Upper thread tension is too strong. 5. Needle size is inappropriate for fabric. 6. Needle eye is worn. 7. Needle hole in needl...
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Condition cause how to fix reference 5. Needle breaks 4. The fabric moves while the needle is piercing it, or the needle zigzags while in fabric. 5. Fabric in being pulled too strongly while sewing. See mechanical adjustment “needle swing”. Guide the fabric gently while sewing. P.10 6. Noisy operati...
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Service access face plate to remove 1. Remove the face plate by removing the cap and set screw. To attach 2. Mount the face plate by the set screw, and then, mount the cap. Belt cover to remove 1. Loosen the set screw, and remove the belt cover by removing the belt cover rib from the front cover. To...
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Service access front cover to remove 1. Remove the face plate and belt cover. (see page 4.) 2. Remove selector dials (a) and (b). Note: number of selector dials is as follows: model 2022 ..... 3 dials 3. Loosen set screws (c), (d), (e), (f), (g) and then, remove the front cover by removing set screw...
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Service access rear cover note: rear cover could be removed without removing first front cover. To remove 1. Remove the belt cover (see page 4). 2. Loosen the set screws a and b and remove the cap h. 3. Remove the set screw c, d, e, f and g. 4. Pull up the 2 spool pins i and j and lower the presser ...
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Mechanical adjustment upper thread tension dial correct setting the standard upper thread tension should be 65g - 95g when the thread (cotton thread #50) in the direction of b with setting the tension dial at “3”. (make sure the foot should be lowered). If the tension is out of the stanard range, ad...
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Mechanical adjustment bobbin thread tension correct setting set the bobbin in the bobbin case and pass the thread (cotton #50) through the tension spring. The bobbin thread tension should be 45g - 55g when pulling the thread in the directon of b. If the tension is out the range, adjust it as follows...
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Mechanical adjustment presser bar height and alignment correct setting the standard presser bar height is 6.0 mm between the bottom surface of the foot and needle plate when presser foot lifter is up position. To adjust 1. Remove the face plate. (see page 4.) 2. Remove set screw a and remove lamp ho...
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Mechanical adjustment needle swing correct setting if the timing of needle swing is not correctly adjusted, the needle will move sidewise while it is in the fabric. Ideally the needle should start swing from a position 2 mm - 3 mm above the needle plate in its right outflow. (with maximum zigzag wid...
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Mechanical adjustment needle drop correct setting when the needle swings in maximum zigzag width, the distance between the both ends of needle hole on the needle plate and needle drop positions should be equal. If not, make an adjustment as follows: to adjust 1. Remove the face plate. (see page 4.) ...
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Mechanical adjustment height of feed dog correct setting lower the presser foot and turn the balance wheel toward you until the needle bar comes to the highest point of its travel. In this condition, the height of the feed dog above the needle plate should be 0.75 mm - 0.90 mm. If it is not in the r...
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Mechanical adjustment clearance between needle and hook (no.1) correct setting the clearance between needle and shuttle race should be 0 mm - 0.15 mm. If not, make an adjustment as follows: to adjust 1. Remove the face plate. (see page 4.) 2. Set the pattern selector dial at left needle position “ ”...
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Mechanical adjustment clearance between needle and hook (no.2) correct setting use this adjustment no.2 when adjustment no. 1 cannot be used. The clearance between needle and shuttle race should be 0 mm - 0.15 mm. To adjust 1. Set the pattern selector dial at “ ”. (stitch length dial at any position...
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Mechanical adjustment needle bar height correct setting the standard distance between the upper edge of needle eye and the tip of shuttle hook should be in the range of 2.9 mm - 3.5 mm when the tip of shuttle hook meets the left side of the needle in ascending travel of needle from its left and lowe...
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Mechanical adjustment hook timing correct setting the standard height of needle point from its lowest point of travel should be in the range of 1.45 mm - 1.95 mm when the tip of shuttle hook meets exactly the left side of needle at left needle position. To adjust 1. Set the selector dial at “ ”. Not...
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Mechanical adjustment feed balance on stretch stitch correct setting if the stretch stitch patterns are distorted with setting the stitch length dial at “ss”. (in case of being a difference between forward feeding and backward feeding during stretch stitch patterns), make an adjustment as follows: t...
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Mechanical adjustment button hole feed barance correct setting when sewing buttonhole, the stitches on each side of buttonhole should be the same stitch density. The range of 9 - 11 stitches in the right side row “backward feeding” against 10 stitches in the left side row “forward feeding” is consid...
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Mechanical adjustment bartack feed of buttonhole correct setting if the material is fed forward of backward when sewing bartac on buttonhole, make an adjustment as follows: to adjust 1. Set the pattern selector dial at “ “ and the stitch length dial at “4”. (set the pattern selector dial at “ “ on c...
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Mechanical adjustment disengagement of cam follower (no.1) correct setting too narrow clearance between the cam follower and the top convex of zigzag cam may often cause difficultly in turning the pattern selector dial or cannot select correct pattern. To adjust 1. Set the pattern selector dial at “...
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Mechanical adjustment needle movement for straight stitch correct setting needle is zigzag slightly when select the pattern selector dial at “ ” and the stitch width dial at “ 0 ”, adjustment is as follows: to adjust 1. Set the pattern selector dial at “ ” and the stitch width dial at “ 0 ”. 2. Remo...
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22 mechanical adjustment (blank page).
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Mechanical adjustment buttonhole function correct setting in bh stitching, the sewed buttonhole should be about 3 mm longer than the length set by the r foot. If this length cannot be obtained, then check and adjust in the following procedure: to adjust 1. Remove the face plate. (see page 4.) 2. Tur...
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Mechanical adjustment motor belt tension check: 1. Too tight or too loose motor belt tension may create belt noise and also too tight motor belt tension can cause the machine to run slow and will overload the motor. Too loose motor belt tension may cause jumping of the belt teeth on the motor pulley...
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Wiring blue cord brown cord blue cord from motor from lamp socket brown cord 25.