Pfaff 1245, 1246 75

Adjustment

●Bring the machine to needle rise position, activate the engaging lever and bring the thread catcher to its front point of reversal by turning the handwheel.

●Align clamp spring 5 (screws 6) in the elongated hole in accordance with requirement 2 - if necessary carrier 1 (screws 2) as well.

●In this position, and taking care to ensure that carrier 1 is parallel to the machine bedplate, tighten screws 2 and 6.

Fig. 11 - 29 A

11 - 35

Contents

Instruction manual Page Index Contents Page Page Safety 1Safety 1.01Directives 1.02 General notes on safety 1.03 Safety symbols Caution 1.04 Important points for the user 1.05Operating and specialist personnel 1.05.01 Operating personnel 1.05.02 Specialist personnel 1.06 Danger Page Proper use 2Proper use Specifications 3Specifications ◆ 3.03 Max. number of stitches/min-1 PFAFF 1246◆ Max. number of stitches/min-1 Disposal of the machine 4Disposal of machine waste Transport packaging and storage Transport packaging and storage Transport to the customer’s premises Transport within the customer’s premises Disposal of the packaging Storage Explanation of the symbols 6 Explanation of the symbols Controls 7Controls On/off switch Pedals +20 Pedal Key on the machine head 7.05 Lever for lifting the presser foot 7.06 Feed regulator / reverse sewing Feed regulator 7.08 Adjustment nut for the top-feedstroke Mounting and commissioning the machine Mounting and commissioning the machine 8.01 Mounting 8.01.01 Adjusting the table-topheight 8.01.02 Adjusting the V-belttension 8.01.03 Mounting the upper V-beltguard 8.01.04 Mounting the lower V-beltguard 8.01.05 Mounting tilt-oversafeguard 8.01.06 Mounting the spool holder 8.01.07 Mounting the sewing lamp▲ Page Page Commissioning the machine Switching the machine on/off Preparation 9Preparation 9.01 Inserting the needle in the PFAFF 9.02 Inserting the needle in the PFAFF 9.03 Winding the bobbin thread, adjusting the thread tension 9.04 Removing/Threading the bobbin case 9.05 Inserting the bobbin case / Adjusting the bobbin thread tension 5 cm Page Page Care and maintenance 10 Care and maintenance 10.01 Servicing and maintenance intervals 10.02 Cleaning 10.03 General lubrication 10.04 Lubricating the hook 10.05 Lubricating the head 10.06 Lubricating the top-feeddrive excentric 10.07 Checking the air pressure 10.08 Emptying / Cleaning the water container of the air filter Adjustment 11 Adjustment 11.01 Tools, gauges and other accessories for adjusting 11.02 Notes on adjusting 11.03 Abbreviations 11.04 Adjusting the basic machine 11.04.01 Positioning the feed dog across the direction of sewing 11.04.02 Positioning the feed dog in the direction of sewing 11.04.03Height of the bottom feed-dog 15 mm 11.04.05 Centering the needle in the needle hole 11.04.06 Lifting motion of the bottom feed-dog 11.04.07 Driving motion of the bottom and top feeds 11.04.08 Hook-to-needleclearance, needle rise, needle height and needle guard (On Model 1246 make these adjustments on both sewing hooks.) Page 11.04.9 Top-feedstroke 11.04.10 Lifting motion of the top feed 11.04.11 Bobbin-caseopener (On Model 1246 make these adjustments on both bobbin openers.) 11.04.12 Safety clutch 10.5 mm 11.04.14 Thread check spring 11.04.15 Thread check spring on PFAFF 1246 with thread trimmer -900/56 1 mm 11.04.17 Presser-footpressure 11.05 Adjusting the thread trimmer -900/56 11.05.01 Pre-adjustingthe control cam 11.05.02 Tripping lever 11.05.03 Pawl 11.05.04 Engaging solenoid Release trip 11.05.06 Engaging lever Linkage rod 11.05.08 Final adjustment of the control cam 5 mm 11.05.10 Connecting rod (for PFAFF 1246 only) 11.05.11 Thread-catcherheight (On Model 1246 make these adjustments on both thread catchers.) 0,1 mm 11.05.12 Knife (On Model 1246 make these adjustments on both knives.) 11.05.13 Thread catcher reverse position Page 11.05.14 Bobbin-threadclamp spring (On Model 1246 make these adjustments on both clamp springs.) 0.3 mm Page 11.05.15 Tension release bar Page 11.05.16 Positioner Wearing parts Wearing parts