Pfaff hobby 1122 Service Manual Download Page 18 | Manualshive

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Pfaff hobby 1122 Service Manual Download Page 18

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104 72 62-26

Adjustmet of the bobbin thread tension

Check

• Insert a full bobbin into the bobbin basket.
• The thread tension spring of the bobbin basket shall give a resistance of 15 +- 2g when pulling the thread
slowly.

Adjustment

Turn screw (A) until the correct thread tension is obtained.
NOTE! Remove any loose pieces of thread or ﬂuff from under the spring.

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Summary of Contents for hobby 1122

Page 1: ...Service Manual hobby 1122 1142...

Page 2: ...e 12 Adjustment of the play in the hook gear 14 Adjustment of the needle bar height 15 Adjustment of the feed dog height 16 Adjustment of the presser bar height and alignment 17 Adjustmet of the bobbi...

Page 3: ...right settings This facilitates the subsequent ne adjustments Unless otherwise speci ed the handwheel must always be turned forward When carrying out maintenance work on live parts or in their proximi...

Page 4: ...our machine by knocking it over or dropping it Cleaning Housing To clean the housing use a dry clean soft lint free cloth To remove any stubborn dirt use a soft cloth with a neutral cleansing agent fo...

Page 5: ...e cap A 2 Unscrew screw B of the face cover 3 Remove face cover C Removing the housing covers 1 Remove the six set screws A 2 Remove the base cover B To attach Shift the drop feed lever C in the direc...

Page 6: ...e the face plate and base cover Pull out the pattern selector dial A and stitch length dial B Remove the setscrews C D and E two off Remove the front cover F unlocking all the hooks H To attach Follow...

Page 7: ...e plate base cover and front cover Remove the set screws A B C and D Lower the presser foot lifter E and pull away the rear cover from the machine clearing the parts 1 2 and 3 in this order To attach...

Page 8: ...tscrews A on the worm B securely Note Make sure the worm does not move sideways when turning the handwheel otherwise the play in the worm gear will change Attach the front cover Adjustment of the side...

Page 9: ...e gear wheel C back and forth and check the play It should be zero or as small as possible Adjustment Remove the front cover Loosen the 2 setscrews A and move the worm to increase the play move the wo...

Page 10: ...en the setscrew Select the maximum width zigzag stitch and check the clearance between needle and side edges of the needle hole Attach the face plate Adjustment of the needle in center position Requir...

Page 11: ...mm Adjustment Remove the needle plate and bobbin holder Insert a new 90 needle Select the maximum width zigzag stitch Rotate hand wheel until the point of the hook arrives behind the needle in the lef...

Page 12: ...position Place the needle rise clamp 61 111 600 35 000 over the needle bar and secure it lightely Place a 2 5 mm feeler gauge 61 111 600 02 000 between the clamp and the needle bar frame Loosen the c...

Page 13: ...000 between the clamp and the needle bar frame Loosen the clamp screw and push the needle risen clamp againt the feeler gauge and tighen the clamp screw Make sure its NO play between the feeler gauge...

Page 14: ...ng direction you until the tip of the hook A comes between both ends B of the feed teeth Turn the hook back and forth and check the play Adjustment Remove the needle plate and bobbin holder Remove the...

Page 15: ...nce between the upper edge of needle eye H and the ring of the hook I should now be 3 0 to 3 3 mm Adjustment Note Before performing this adjustment check Adjustment of the timing of the hook in relati...

Page 16: ...eedle plate D Adjustment Select the machines longest stitch lenghts setting Turn the hand wheel until the feed dog D comes to its highest position Remove the base cover Loosen the screw A and nut B Tu...

Page 17: ...stment Remove the face cover Raise the zigzag foot Pass the allen key C through the hole D of the supporter Loosen the hexagon socket screw E Adjust the distance between the zigzag foot A and stitch p...

Page 18: ...bobbin into the bobbin basket The thread tension spring of the bobbin basket shall give a resistance of 15 2g when pulling the thread slowly Adjustment Turn screw A until the correct thread tension is...

Page 19: ...en sewing in cotton fabric with a polyester thread 50 E Adjustment of needle thread tension Check Set the thread tension dial at 4 and sew a zig zag stich Adjustment Remove the face cover and Front co...

Page 20: ...selected there should be no feeding Adjustment Sew a buttonhole to check if the fabric is fed while sewing the bartacks Remove the cap E If the fabric is fed foward A turn the adjusting screw in the...

Page 21: ...nsity Check Select the bartrack on the Buttonhole indication Attach the buttonhole foot R Sew a buttonhole The stitches on each side of the buttonhole should be of the same stitch density Adjustment R...

Page 22: ...n the button diameter Adjustment Remove the face cover Attach the buttonhole foot R and lower the feed dog by turning the hand wheel then lower the buttonhole foot Loosen the screw A Pull down the but...

Page 23: ...wing stretch stitch pattern Adjustment Select the triple lock straight stitch Put a piece of paper under the presser foot and turn the hand wheel to check the needle drop position in forward A and bac...

Page 24: ...e pin B on the threader shaft and push the threader guide up to snap it in place see Fig 1 Adjustment If the hook C hit against the side edge of the needle eye loosen the setscrew D and adjust the lat...

Page 25: ...hine socket D Remove the setscrews B and machine socket lid E Remove the nuts H and disconnect the motor cord M Remove the setscrews C and motor G To attach the motor follow the above procedure in rev...

Page 26: ...ehalten Subject to alterations in design Sous toute r serve de modi cations techniques Salvo modi caciones t cniche Con riserva di modi che tecniche Nr 104 72 62 26 englisch 2005 Feb Copyright VSM Gro...

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