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Brother TZ1 B651

IMPORTANT !!!
SWITCH THE MACHINE OFF BEFORE PROCEEDING WITH THE ADJUSTMENTS :

Bobbin Base Replacement

1. Remove the presser foot,needle plate .feed and bobbin case .
2. Turn the hand wheel towards you to observe that there are 3 screws holding the GIB plate in place

Fig 1

. Remove all 3 screws which will release the gib plate.

3. Turn the hand wheel slowly towards you until you see the hook point

Fig 2

.

4. With the hook point in position as

Fig 3

remove the BOBBIN BASE by tilting it from the bottom.

Fig 4

5. With the new base in your left hand present it at an angle

Fig 4

to the hook ensuring that it locates

into the bobbin base finger

Fig 5

.

6. With the bobbin base located correctly turn the hand wheel towards you until you can see where the

GIB plate has to be refitted

Fig 1

.

7. Fit the GIB plate into position and secure the 3 retaining screws. Put a spot of mineral oil around the

base and gib plate to help smooth running in.

8. Pull machine back into its normal working position and proceed to re -assemble the presser foot,

feed and needle plate. ©

9. Fit bobbin and bobbin case.
Now test the machine for stitching quality and adjust tensions if necessary

Side Views of the Hook and Bobbin Base

Fig 1

Fig 2

Fig 3

Fig 4

Fig 5

Gib Plate

Gib Screws

Hook Point

Bobbin Base
Retainer Slot

Hook Point

New Bobbin Base

Hook

Base Retainer

Hook

Bobbin Base

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Содержание TZ1 B651

Страница 1: ...l Sewing Machine Repairs MADE EASY With QWIK Fix Teach Yourself Guides and Manuals Brother TZ1 B651 QFBBR TZ1B651 Artizan 196 High Road Wood Green London ENGLAND N22 8HH www seweazi com BASIC REPAIRS ADJUSTMENTS ...

Страница 2: ...E NOTE If it is felt that carrying out any of the instructions listed in this manual or CD are not within the capabilities of the person about to attempt the adjustments you must seek the assistance of a qualified engineer QWIK Fix Publications DO NOT guarantee that the enclosed instructions will solve any or all of the readers sewing machine breakdown problems but advise that the information is a...

Страница 3: ...Spring Replacement 2 2 Feed Setting 3 1 Hook Timing 5 1 Hook lateral adjustment 5 2 Needle bar Settings 6 2 Needle Insertion 6 4 Needle Types Sizes 6 5 Needles Using The Correct Type and Size 6 6 Needle Design 6 7 Stitch Formation 12 1 Tension Lower 13 2 Tension Upper 13 3 Thread Types Sizes 14 1 Threading 14 3 Parts Description Inner Machine UPPER 20 5 Inner Machine LOWER 20 6 QFBBR TZ1B651 ...

Страница 4: ...E PROBLEMS Needle plate centre bends 17 7 Needles bend 17 7 Needles break 17 7 Needles fall out of needle bar 17 7 NEEDLE BAR PROBLEMS Needle bar jams or seizes 17 7 PRESSER FOOT PROBLEMS Presser foot jams up 17 8 Presser foot doesn t lift high enough 17 8 Presser foot lifts too high 17 8 Presser foot doesn t hold materials 17 8 STITCH FAULTS Miss stitching 17 8 Stitch uneven 17 8 STITCH LENGTH PR...

Страница 5: ... the BOBBIN BASE by tilting it from the bottom Fig 4 5 With the new base in your left hand present it at an angle Fig 4 to the hook ensuring that it locates into the bobbin base finger Fig 5 6 With the bobbin base located correctly turn the hand wheel towards you until you can see where the GIB plate has to be refitted Fig 1 7 Fit the GIB plate into position and secure the 3 retaining screws Put a...

Страница 6: ...ine 2 Depending on the style of base retainer it should be similar to FIG 1 But may have the retaining screw the opposite side to that in the fig 3 To replace undo the screw holding the retainer and pull the retainer away from the machine 4 When replacing it ensure you connect the bobbin base retaining finger in the slot of the bobbin base N B The retainer may be in a slightly different location t...

Страница 7: ...g down from its stop or rest point Continue turning the hand wheel slowly towards you until the eye of the needle has just entered the fabric STOP The check spring should now be resting with no more tension on it If it rests too early before the eye has entered the fabric slacken the tension unit screw Fig 2 and turn the tension unit to the left about 1 8th of a turn and lock the screw back up If ...

Страница 8: ...cement 1 Remove tension unit from the machine see FIG 2 2 To remove tension stud and discs complete loosen screw on tension unit see FIG 1 3 Remove the check spring from the back of the stud 4 Fit a new spring 5 Refit the stud to the unit tighten the stud screw FIG 1 6 Refit the tension unit to the machine 7 To complete refer to the Check Spring Timing section FIG 1 FIG 2 Thread Take Up Lever Scre...

Страница 9: ...ays 2 important functions 1 To feed materials as evenly as possible to give a regular stitch length 2 To aid the upper thread take up lever to complete the draw of the thread before the feed drops to return to feed forward again The optimum setting for the feed is as Fig 1 To adjust Turn balance wheel towards you until the feed is at its maximum height STOP Push machine back on its hinges and loca...

Страница 10: ...the hook point should be in line with the centre of the needle Fig 3 If it is the hook timing is correct and proceed to the next section 5 2 lateral hook adjustment If the timing is incorrect continue as follows 7 Slacken the screws that hold the hook to the drive shaft and PINCH TIGHTEN one screw 8 Turn the hand wheel towards you until the needle reaches the bottom of its stroke Fig 1 STOP 9 Cont...

Страница 11: ...he needle is new and the long groove is facing you 14 Set the needle bar alignment to the central position 15 Turn the hand wheel towards you NEVER AWAY FROM YOU until the hook point aligns with the centre of the needle Fig 3 and that the air gap does not exceed the thickness of 1 piece of normal 80gm paper Fig 4 If it does then slacken the hook timing screws and align as Fig 4 16 Tighten the timi...

Страница 12: ...et the needle bar to the central position Remove needle plate and presser foot Turn balance wheel TOWARDS you never away until the needle has reached the bottom of its stroke Fig 1 STOP Continue to turn balance wheel TOWARDS you until the hook point aligns with the needle STOP If the needle bar height is correct the point of the hook will be aprox 2mm above the eye of the needle Fig 2 To adjust re...

Страница 13: ...f the data provided in any of their publications QWIK Fix Publications 6 4 Brother TZ1 B651 IMPORTANT SWITCH THE MACHINE OFF BEFORE PROCEEDING WITH THE ADJUSTMENTS Needle Insertion Ensure that the needle is fitted right up into the needle bar and that the LONG GROOVE is facing you to the front Fig 1 Fig 1 Needle Clamp Screw Needle Eye Long Groove Facing You ...

Страница 14: ...al you may want to sew or even more important is the capability of your machine to sew a particular product EG Leather machines usually utilise a cutting point such as a narrow wedge or triangular tip Textiles machines mainly use round tips but if you are using your machine for more that one style of material you must be aware that your needle is as equally important as your thread Needle Sizes Ol...

Страница 15: ...hread Thickness Being Used Cottons R from size 70 to 110 Stretch Fabrics SES ballpoint from size 60 to 100 Light Upholstery R from size 90 to 130 Light Textiles R from size 60 to 90 Leather Light Shoes NW or TRI from size 90 to 130 Heavy Shoes LR or RTW from size 140 to 250 Saddlery LR or RTW from size 180 to 280 Handbags NW or TRI from size 90 to 130 Belts NW or TRI from size 90 to 130 Sheepskin ...

Страница 16: ...opying in any format written or electronic of any of the data provided in any of their publications QWIK Fix Publications 6 7 IMPORTANT SWITCH THE MACHINE OFF BEFORE PROCEEDING WITH THE ADJUSTMENTS Needle Design Needle Design Side View Long Groove View Shank Blade Scarf Eye Point Shank Long Groove Eye Point ...

Страница 17: ...carf side to be thrown out into what is known as LOOP FORMATION This loop can be forced to be small or large depending how long the TIMING of the hook is The longer the hook takes to reach the needle the larger the loop formation will be Normal textile timing is usually around 2 3mm but for heavy products such as saddlery it may be necessary to retard the timing to even 4 5mm Once the thread has b...

Страница 18: ...readed and inserted and correctly threaded Are you using the correct needle size Are you using the correct thread YES Check the following adjustments Adjustments 1 Remove the bobbin case and bobbin from the machine 2 With a FULL bobbin threaded in the tension spring pull a small amount of thread through 3 With the thread held firmly allow the bobbin case to fall slowly see FIG 4 If it moves rapidl...

Страница 19: ... adjustment If you have tension as Fig 1 or 2 it could be that the upper tension is too tight or loose BUT WAIT Is the upper thread correctly threaded are you using the correct needle size are you using the correct thread is the bobbin correctly inserted and threaded Check all before making any adjustments Adjustments Remove the presser foot and with the presser then lower the presser foot bar Wit...

Страница 20: ...180 200 230 needle Usually used in the heavy leather trades See examples below Make up Size Products Suggested Needle Size Spun Polyester TKT 180 Overlockers 60 to 80 Spun Polyester TKT 120 General Textiles 60 to 110 Core Spun PolyesterTKT 75 Soft Furnishings 90 to 130 Bulk Nylon TKT 180 Underwear Coverseam LOOPERS ONLY And Overlocker Bonded Nylon TKT 40 Leather Heavy Upholstery 90 to 140 Bonded N...

Страница 21: ...o thread guide 4 Between tension discs from right side 5 Over check spring 6 Under check spring tensioner 7 Back up through thread guide 8 Through thread take up lever Right to left 9 Down through thread guide to the left of the thread take up lever 10 Through the thread guide on needle bar 11 Through the needle front to back NB The threading format for all lockstitch machines is very similar alth...

Страница 22: ...bbin winder doesn t drive internal type Drive wheel rubber is worn Drive wheel rubber not close enough to drive wheel shaft Winder wheel seized Thread is too tight or caught up in tension unit or from thread stand Replace drive wheel rubber Reset drive Oil centre of drive spindle Rethread and reset tensions to winder Bobbin winds unevenly Tension too loose Misaligned tension unit or guide Reduce w...

Страница 23: ...k raceway Thread tension release setting incorrect Machine incorrectly threaded Replace hook Put a spot of mineral oil in the hook raceway Reset tension release mechanism Rethread correctly NEEDLE FAULTS Possible Fault Possible Remedy Needle plate centre bends Needles too big for needle plate hole Bent needle Feed dog too high Enlarge needle hole Replace needle with correct size Replace needle Adj...

Страница 24: ...ng incorrect Needle plate hole too small Threaded incorrectly Damaged hook point Hook too short Needle touching side of needle hole Needle damaged Reduce needle tension Retime hook Adjust hook lateral position Adjust needle bar height Replace needle with one of a larger size Replace with a smaller needle Change to a thread size compatible to the materials and size of needle Replace needle with cor...

Страница 25: ...g tension release Thread correctly Adjust tension release Hold BOTH thread end when commencing a sewing operation Remove the damage to hook or thread catcher or replace the hook assembly Oil the hook bobbin base and raceway saddle Remove damage to retainer or replace retainer DO NOT MOVE KNEE LIFT WHEN SEWING THREAD FAULTS Possible Fault Possible Remedy Thread breaks Upper threading incorrect Need...

Страница 26: ...heel 4 Thread Take Up Cam 5 Stitch Length Adjuster 7 Presser Bar 2 Needle Positioner Stitch Width Adjuster 8Tension Units 9 Needlebar Adjusting Clamp 12 Feed Bar 13 Thread Check Spring 14 Hook Glossary Of Inner Casting Of Machine REFERENCES 1 Thread Take Up Lever 2 Needle Positioner stitch width adjuster 3 Handwheel 4 Thread Take Up Cam 5 Stitch length Adjuster 6 7 Presser Bar 8 Tension Units 9 Ne...

Страница 27: ... 11 Hook Drive Gearbox Glossary Of The Underside Of Machine 2 Feed Arm Link 3 Hook 4 Hook Drive Shaft 5 Feed Alignment Adjusters 6 Feed Bed 7 Feed Arm Bar 8 Bobbin Base Retainer 9 Feed Arm Lateral Alignment Screws 10 Hand wheel REFERENCES 1 Feed Height Adjuster 2 Feed Arm 3 Hook 4 Hook Drive Shaft 5 Feed Alignment Adjusters 6 Feed Bed 7 Feed Arm Bar 8 Bobbin Base Retainer 9 Feed Arm Lateral Alignm...

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