Reliable MSK-8400BL-18 User's Manual
Contents
1. 384043 42 44 43 4542 46 47 48 49 MSK 8400BL 18 lo 7074 73 7270 59 61 60 59 BT ch CO 6 66 64 65 54 S 56 62 58 45 5 56 55 54 1WF5 022 1WF5 027 1WF5 028 43WF5 001 1WF4 018 1WF5 005 1WF5 004 1WF5 003 1WF5 049 1WF5 002 1WF5 046 1WF5 047 1WF5 001 1WF4 052 1WF2 023 1WF4 054 1WF2 009 1WF4 017 1WF4 019 1WF4 020 43WF4 001 1WF4 038 1WF4 035 1WF4 034 1WF4 030 1WF4 029 1WF4 036 1WF4 031 1WF4 001 9WF4 001 1WF4 032 1WF4 005 1WF4 004 9WF4 002A 1WF4 007 1WF4 008 1WF4 009 1WF4 002 1WF4 003 1WF4 033 4 Needle bar and lower feed components re rente forme EL Screw Bushing Screw Needle bar rocking shaft Screw Rear crank Nut Link lever Screw Feed shaft right crank Pin Washer Nut Feed shaft bushing Screw Collar Screw Feed crank Split stop ring Crank pin Oil wick Feed shaft Oil felt Connecting crank left Screw Oil wick Oil wick clamp Crank shaft Oil wick Feed dog support Feed dog support Screw Washer Screw Feed dog Feed dog Screw Oil felt Feed dog lifting fork Nut Screw Screw 2 2 2 1 3 1 1 1 1 1 1 1 1 2 2 2 4 1 2 1 1 1 2 1 2 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 SM1 4 X24 8 SM1 4 40 4 Stop ring 5 GB896 86 63 X55 cotton thread Wool felt SM3 16 X28 12 2 5 X 430 cotton thread MSK 8420BL 18 MSK 8400BL 18 SM15 64 X28 16 Washer 6 GB95 85 SM1 82. X40 7 MSK 8420BL 18 MSK 8400BL 18 SM1 8 X44 4 Wool felt SM1 8 X40 13 5 SM11 64 X40 6 5 Lower shaft thread looping components Al 32 33 34 35 36 37 42 43 44 45 46 47 48 50 51 52 4 391 S 7 WAL e B 489 g j ome SFe ae Q 30 TTR 53 54 rd e DI Oy 9 2 5 Lower shaft thread looping components el rel et O ONIN Vi BW N KA 1WF2 063 1WF2 060 1WF2 059 1WF2 061 1WF2 064 1WF2 065 1WF2 070 1WF2 069 1WF2 072 1WF2 071 1WF2 075 1WF2 026 1WF2 076 1WF2 074 1WF2 062 1WF2 034 1WF2 033 1WF2 077 1WF2 067 1WF2 066 1WF2 044 1WF2 068 1WF2 052 1WF2 078 1WF2 009 1WF2 079 1WF2 055 1WF2 035 1WF2 036 43WF2 002 1WF2 006 1WF2 019 43WF2 004 1WF2 058 1WF4 041 1WF4 042 1WF4 010 1WF4 011 1WF4 012 1WF2 055 1WF2 051 1WF2 009 1WF2 052 1WF2 050 1WF2 049 1WF4 044 1WF4 043 Right hook saddle Screw Upper bushing Lower bushing Rotary hook assembly Bobbin Oil wick Hinge shaft Screw Link lever Inner hook finger bracket Screw Washer Inner hook finger Washer Nut Upper bushing Screw Washer Screw Lower bushing Nut Screw Screw Left hook saddle Screw Spiral gear Screw Spiral gaer Feed link Lower shaft bushing left Oil wick Lower shaft Feed dog liftingcam Screw Lower shaft bushing right Oil wick Stop ring Spring Button Screw Feed cam Feed link Needle bearing Stop ring Lower shaft bushing assembly m
3. needle gauge is 6 4mm for the other needle gauge the relevant parts can be ordered from the factory 4 Machine operation needle 1 Coordination among needle thread and materials Please use needle DPX 17 or 135 17 Nm125 180 the coarseness of needle should be in accordance with the nature of materials If stitching on heavy weight materials with aslim needle the needle will be broken easily Needle skipping or thread breakage will also occur On the contrary stitch ontightly materials witha very coarse needle the materials will be destroyed because of over big needle hole so the needle and thread should be properly selected 2 Install the needle Fig 11 Turn the hand wheel to lift the needle bar to its highest position loosen the needle set screw A fully insert the needle shank up to the bottom of needle holder keep the long grooves of the two needles opposite with each other then tighten the set screw as shown in Fig a For single needle keep the long groove of needle facing the left ofthe operator as shown in Fig b Note Fig c insufficient insertion or Fig D wrong direction of needle groove is incorrect 3 Winding the bobbin thread 3 1 The method of winding Insert the bobbin B into winder shaft threading the thread A to upper and lower holes of pin E then to thread tension disc F draw the thread tip and wind thread several circles around bobbin B put the winding lever D into bobbin B th
4. 1 032 1WF1 038 1WF1 039 1WFI1 019 1WF1 030 1WF1 027 1WF1 028 1WF1 003 1WF1 004 IWF1 005 1WF1 034 1WF1 036 1WF1 007 IWFl 006 1WF1 018 1WF1 013 1WF1 009 1WF1 008 IWFl 012 1WF1 021 1WF1 020 1WF1 035 1WF1 037 1WF1 023 1WF1 033 1WF1 040 1WF1 029 1WF1 022 IWFl 031 1WF1 014 Pin Screw Screw Model label Brand label Rivet Upper thread guide Screw Back cover Screw Washer Cover Front slide plate Screw Thread take up levercover Back front cover Screw Spring Thread retainer Lower thread finger Screw Screw Screw Screw Middle thread finger Rubber plug 08 5 Face plaft Screw Upper thread finger Guide set plate Oil stopper setplate Oil stopper Needle plate Pin shaft Thread releasing lever Right sliding plate Left sliding plate Rubber plug 14 5 Rubber plug 12 7 Back fitting cover Rubber plug 12 7 SSS he SS SS a SP SS Li HE bad ai ia ld En SS SS i ES Sep k ek an cn Feb DO d HL Ze S e lu Fe Se A6 X30 GB117 86 M10 X35 GB70 85 M10X35 GB5781 85 2 5 X5 GB827 86 SM11 64 X40 8 SM11 64 X40 9 PE SM11 64 X32 5 4 SM9 64 X40 6 5 SM11 64 X40 SM9 64 X40 SM3 16 X28 1 MSK 8420BL 18 machine casting components O SE QA IN lt SP m J jj 28 se N so J N 25 39 1 MSK 8420BL 18 machine casting components re rene fe L rei 1WF1 010A Thread tension fixingbracket asse
5. 2 008 1WF5 011 1WF5 013 1WF5 012 1WF2 007 1WF2 005 1WF2 006 1WF2 004 1WF2 001 1WF2 006 1WF5 010 22T1 007 1WF5 009 1WF5 036 1WF3 009 1WF5 014 1WF5 016 1WF5 015 1WF5 043 35T5 502 2272 004 1WF2 003 35T1 103 1WF2 002 22T2 017 1F 009 1WF5 007 1WF5 008 1WF5 020 1WF5 021 Oil wick Shaft for needle bar rocking frame Screw Screw Oil wick Bushing Thread take up lever Thread take up leversliding block Screw Oil wick Plug Needle bar crank pin Oil wick Needle bar link Needle bar rocking frame Screw Shim needle barrocking frame Oil felt Needle bar connector Screw Needle bar Needle bar rocking pressing bar Screw Washer Needle bar holder guide Pressing bar link Screw Guiding plate Spring Spring bar Inner presser foot Inner presser foot Screw Needle holder Needle bar thread guide Needle holder screw Needle set screw Needle Needle bar rocking sliding block Sliding block shaft Needle bar rocking left crank Pin Washer 62 5 X 80 cotton thread SM5 16 X28 10 SM 15 64 X28 8 62 5 X 240 cotton thread SM 15 64 X28 12 DZ X25 3 X80 cotton thread SM3 32 X56 4 6 SM9 64 X40 8 5 MSK 8420BL 18 MSK 8400BL 18 SM11 64 X40 12 Washer GB848 85 SM11 64 X40 15 MSK 8420BL 18 MSK 8400BL 18 MSK 8420BL 18 MSK 8400BL 18 SM9 64 X40 4 3 MSK 8400BL L18 DP X17 23 A4 X24 GB117 86 4 Needle bar and lower feed components 2 3 4 04 6 9 1012 19
6. MSK 8400BL 18 MSK 8420BL 18 Industrial Sewing Machine Instruction Manual wh IN RELIABLE CONTENTS Operation instruction 1 Brief introduction CRETESE TETTE 0 RETE ET ETRE ATE TE RE NIE RAR RIONI 3 Machine installation and operation preparation 00 000 ooo coe coe ooo ooo ooo 600 coe ooo ooo ooo ooo 1 Machine installation sss see see see see see eso eeo seo ooo ooo ooo coo ooo ooo soe ooo ooo coo coo ooo ooe ooe eee eee ooo 2 Operation preparation and notice before running 4 Machine operation cre cee cee cee cee cee eee ker ereere ereere oseere een sen ss sen nen nen cae mnn man essens 1 Coordination among needle thread and materials see see see see cee see see see see see see eee see 3 Winding the bobbin thread cee cee cee cee cee see eee see eee cee cee sre cee cee eee sn nen errore man essees 5 Machine adjustment i eee cee cee cee ee en cee cee eee tee cee eresse nn nee mnn een sen nen nen man nen ees 1 Adjust the needle thread tension and bobbin thread tensione sse ees see see eee eee see see vee 2 Adjust the pressure of presser foot coe coe see eee cee cee cee cee osooso oee ooe ooe soe sos eoe eoe soo eoo soo coo 3 Adjust the safety clutch device Koa dee She eee SS See wae RES BOO a ay BES AUK a wied Parts manual Knee lifter and winding components Lubrication components oO GON 9 dd BP W N A MSK 8420BL 18 machine casting components HH cee tee eee e
7. adjusting crank shaft Stitch length adjusting crank Screw Screw Collar SM15 64 X28 8 5 SM15 64 X 28 12 SM 15 64 X 28 13 SM15 64 X 40 10 5 SM11 64 X40 8 14 X2 4 GB1235 86 SM15 64 X28 10 SM15 64 X28 6 1WF4 057 Reverse feed adjustingbracket N ED 1WF4 045 Oil wick b3 X26 cotton thread N 1WF4 039 Oil wick b4 X 16 cotton thread N O 1WF4 056 Guiding plate N N 1WF1 011 Screw SM11 64 40 9 LA O 7 Knee lifter and winding components 3 7 Knee lifter and winding components se revs rm CIT 13 WF4 027 Screw 13 WF6 029 Nut 33T4 008C1 Thread tension spring 22T1 012F5 Thread tension disc 13WF6 028 Thread tension shaft 13WF6 012 Crank 13WF6 014 Screw 13WF6 017 Bobbin winding pulley 13WF6 018 Screw 13WF6 019 Friction ring 13WF6 001 Winder base 13WF6 021 Winding crank 13WF6 022 Pin 13WF6 002 Screw lower 13WF6 006 Winding spanner 13WF6 007 Spring lever 13WF6 008 Screw 13WF6 009 Screw 13WF6 010 Screw 13WF6 011 Winding spannershaft Stop ring 13WF6 015 Winder shaft 13WF6 016 Locking ring 13WF6 005 Bobbin thread trimmer 13WF6 003 Screw upper 13WF6 004 Spring 13WF6 025 Spring 33WF6 020 Positioning pin 13WF6 013 Positioning pin 1WFS 040 Slot for slidingblock 1WF5 039 Screw 1WF3 011 Screw 1WF3 010 Nut 1WF3 013 Screw 1WF3 014 Spring 43WF3 001 Knee lifting lever 1WF3 012 D Knee lifting lever 1WF3 015 Screw 1WF3 016 Presser bar springlever 1WF3 001 Outer presser fo
8. be touched with the thread stand then tighten the nut A 1 6 Install the motor Fig 5 Move the motor C leftward or rightward to make the hand wheel belt groove A and motor pulley belt groove B runin line 1 7 Connecting the clutch lever to the pedal Fig 6 A The optimum tilt angle of pedal against floor is approx 2030 B Adjust the clutch of motor so that the clutch lever C and draw bar B runin line C The machine hand wheel should rotate counter clockwise for normal sewing when view from opposite side of balance wheel The motor should rotate inthe same direction The rotation can be reversed by reversing the plug of motor turn over 180 D Adjust the tension of V belt F by moving the motor up and down The proper tension of V belt is a slack of 10 12mm when the belt is depressed at the belt span by finger 2 Operation preparation and notice before running 2 1 Clearing the machine Before the head is packed all of the parts of the machine are coatedwith anti rust grease meanwhile the grease can harden and the dust can cover the machine surface during long time storage and shipment so the dust and grease must be cleared by clean cloth with gasoline 2 2 Examination Although every machine is conformed by strict inspection and test before delivery the parts of the machine may be loose and deformed after long distance transportation with jolt A thorough examination must be performed Turn the balance w
9. en it can automatic winding when sewing If only winding not sewing please lift the presser foot Please don t overfill the bobbin thread otherwise the thread will loosen down from the bobbin The optimum capacity of bobbin thread is fill about 80 of bobbin outside diameter and this can be adjusted by screw D After finish thread canbe cut by thread cutter shown in Fig 12 Wind the thread A several circles around cutter C draw the thread and the thread 1s cut 3 2 Threading Fig 13 A Every thread should be drawn through thread hole A when using light and smooth thread polyester or long silk thread it should be drawn through thread hole B B Keep the thread take up lever at its highest position threading the needle thread in the following numerical order 3 3 Stitch length Fig 14 The stitch length can be regulated by stitch length dial A Turn it counterclockwise to expand its length and clockwise to shorten its length The numbers on dialshow the sizes of the stitchlength in mm For reverse feed press down feed lever B to perform reverse sewing Release the lever the feed lever can reset automatic and the forward sewing is resumed R10 3 4 Placing bobbin Fig 15 Note when bobbin is placed into the bobbin case the thread should be wound properly inthe correct direction Thread gt shown in the figure Sliding plate 3 5 Drawing thread from the bobbin Fig 16 A Draw the thread end to bobbin s
10. en nn nar mnn mea nen nenn eee MSK 8400BL 18 machine casting components see en sen tee tee tee een en cee eke cee nen ees Upper shaft and presser foot components siii eee tee en tee eee dan men ereere eee eee eee eee eee Needle bar and lower feed components i iii Lower shaft thread looping components ei j Stitch length adjustment components Cae AS HOW REG KE BES SON MSS ONE BES Wee BG late li bee See swar GOs Accessories ie Ve Gee Cae BEE E iti ai 66S WES Ow ee e Sa 1 3 a Qul 5 6 5 6 6 9 6 7 9 10 13 14 17 18 19 20 23 24 25 26 27 28 29 30 31 32 33 Operation instruction l Brief introduction 2 Main specifications MSK 8420BL 18 machine adopts straight double needle and two vertical auto lubricating hooks for thread looping sliding lever for thread take up to form two lines of lockstitch seam The upper and lower shafts are supported by needle bearing and driven by toothed belt plunger oil pump lubrication system compound feed mechanism of feed dog walking foot and needle so even if for long stitch length or sewing long materials it can deal with them freely MSK 8400BL 18 sewing machine adopts single straight needle and vertical auto lubricating hook for thread looping it has all of the advantages of Needle gauge 6 4mm standard DER Both of the models are widely used in the factories Special needle gauge available mm 3 2 4 4 8 8 of suitcase tent cushion leather go
11. er Screw Pin Oil wick press spring Oil pipe Oil draining pipe Oil wick Oil pipe positioning clamp Needle bar oil returning pipe Screw Washer Oil returning pipeclamp Set spring Screw Washer Oil draining pipeend clamp Screw Screw Bushing Oil pipe Plunger Plunger spring Plunger spring stopper Screw Oil filter Washer Filter net Oil filter fixing plate Oil pipe clamp Oil pipe forright hook saddle Oil pipe clamp Oil tray assembly Oil tray assembly Oil wick Oil pipe Oil pipe Oil pipe clamp Oil pipe Oil wick Oil wick Clamp Oil pipe clamp Oil nozzle assembly Oil filter fixing bracket ed bech bech bech N e e e bech Fesch bech kd KA I LA e m a i IN DI A bech Fesch Fesch a MD RR N a SM3 16 X28 12 Wool felt 3D X0 5 X60 Cotton thread M4 X16 GB69 85 3DX1 X400 5DX1 X400 62 5 X550 cotton thread 3D X0 5 X150 SM9 64 X40 9 Washer 4 GB7246 87 SM11 64 x 40 9 SM9 64 X 40 4 5 SM11 64 X 40 10 3DX1X90 SM1 8 X 44 4 5 H62 brassiness MSK 8420BL 18 MSK 8400BL 18 b 2 5 X 430 cotton thread 3DX0 5X410 3DX1X445 MSK 8420BL 18 3DX 0 5 X 220 dh 2 5 X 300 dh 2 5 X 240 MSK 8420BL 18 MSK 8420BL 18 9 Accessories un ATI 10 12 e 14 9 Accessories 33TF 010 Parts bag 22T9 007F1 Casting hinge 22T9 007F2 Casting hinge cushion 22T9 009 Casting cushion big 22T9 010 Casting cushi
12. he button on the bed surface with left hand turn the hand wheel slowly with right hand in the direction shown in Fig 22 clockwise B When the stopper brakes the hand wheel more strength is needed to turn the balance wheel to reset the safety clutch device C Release the button D So the resetting is OK and put the bobbin into hook See Fig 15 3 3 How to adjust the strength on the safety clutch device Fig 23 A When the white mark of the eccentric pin aims at the centre of the lower shaft indicates that the strength on the safety clutch is the minimum When the white mark points outward the strengthis properly increased B For adjusting the strength of it move the belt and loosen the set screw of eccentric pin and turn the eccentric pin C After adjustment please tighten the setscrew 3 4 Adjust the upper feed mechanism Fig 23 If the upper and lower feed are not in timing during sewing the longhole of thehorizontal feed crank right should be adjusted to get the length ofupper feed Adjusting as follows A Loosen the special stud B Move the stud upward to decrease the amount of upper feed C Move the stud downward to increase the amount of upper feed Theoretically when it is on the reference line of the horizontal feed crank the upper feed amount equals to the lower feed amount D After adjustment tighten the special stud 3 5 Adjust the vertical stroke of presser foot Fig 25 When stitch on t
13. he very elastic materials or the thickness of sewing materials changes the adjustment should be done in the following order A Loosen the special stud B When the central line distance between the special stud and the presser foot lifting rear crank becomes shorter the vertical stroke of presser foot will become longer on the contrary the distancebecomes longer the stroke will become shorter C After adjustment tighten the special stud The common vertical stroke of presser foot can be adjusted within therange of 2 6mm 3 6 Adjust the hook oil amount Fig 26 It adopts plunger full auto lubricating system even at a very low speed it still can supply and suck oil very well Generally only the hook oil amount can be adjusted the others cannot be adjusted The hook oil amount can be controlled by the oil amount adjusting screw First loosen the nut of adjusting screw turn the screw clockwise to increase the oil amount on the contrary decrease the oil amount After adjustment tightenthe nut miersase NN k I ADecrgase Special stud Crank Crank link Parts manual 1 MSK 8420BL 18 machine casting components O SE QA IN lt SP m J jj 28 se N so J N 25 39 1 MSK 8420BL 18 machine casting components 43 WF1 001 Machine bed 43 WF1 002 Machine arm OD oo N Nn A WO N KA 43WF1 003B 43WF1 004B IWFl 015 IWF1 016 IWFl 017 IWFl 011 22T 1 007 1WF
14. heel slightly by hand to check if there is running obstruction parts collision uneven resistance and abnormal noise If any of these exist adjustment must be made accordingly before running 2 3 Notice before running A Oiling Fig 7 Oil amount should be filled according to the marks in the oil pan Mark A refers to the highest of oil amount Mark B refers to the lowest be careful that the oil amount should not be lower than Mark B otherwise the machine parts can not be fed with oil and cause overheat and collision Please be sure to use machine oil 18 or HJ 7 B When the machine starts for initial time or reuse after a long time the proper oil amount should be filled in the sections of machine shown by arrows in Fig 8 9 When it is in operation please observe the oil sparking in oil screen to check the oil condition C When a new machine starts running for extending its lift please run at a medium and low speed 1000s p m for about a month and then raise the speed gradually D Please turn off the power when it is not in use or the operator leaves away from it E Replace the oil every month when replacing fully drain off the old oil in the oil pan and add the new one F For MSK 8420BL 18 the needle gauge options are 6 4 3 2 4 4 8 8 9 5 12 7 16 19 24 5mm To get it the needle plate inner and outer presser foot needle holder feed dog left and right sliding plate thread guide should be changed the standard
15. hine arm Pin Screw Screw Model label Brand label Rivet Upper thread guide Screw Back cover Screw Washer Cover Front slide plate Screw Thread take up levercover Back front cover Screw Lower thread finger Oil felt Screw Screw Screw middle thread finger Rubber plug 8 5 Face plate Screw Upper thread finger Guide set plate Oil stopper setplate Oil stopper Needle plate Right sliding plate spring retainer Thread releasing lever Right sliding plate Left sliding plate Rubber plug C 14 5 Rubber plug 6 12 7 Back fitting cover Rubber plug 12 7 NO Fe A e Re LU Re N KA Ke QI Vi 2 l l l l l l l l l l l l l 2 l l l l l l l l l l l l l A6 X30 GB117 86 M10 X35 GB70 85 M10 X35 GB5781 85 62 5 X5 GB827 86 SM11 64 X40 8 SM11 64 X40 9 PE SM11 64 X32 5 4 SM3 16 X28 2 MSK 8400BL 18 machine casting components N H e IL O a Y Z AL Gs m I pi CA q Lale e 20 LE de SN ez H 23 3 2 MSK 8400BL 18 machine casting components re rente me Rf mn IWFI OIOA Thread tension fixing bracket assembly 1WF1 010B Thread guide bracket 1WF1 010C Thread guide plate 1WF1 010D Spring 1WF1 010E Thread guide bracketscrew assembly 1WF1 010M Thread releasing pin short 1WF1 010H Thread tension nut 1WF1 010G _ Thread tension spring 1WF1 010S Thread releasing di
16. iddle Lower shaft bushing rear Screw Screw Bearing Bearing pressing ring Screw Oil wick Pin w e kel me kel Kk Kk Kk Kk Kk N Kd Kk Kk Kk Kk Kk Kk Kk Kd Kk Fi P SM14 64 X28 2 5 X14 cotton thread SM3 16 X32 SM9 64 X 40 4 5 Washer 4 GB848 85 Washer 4 GB848 85 SM3 16 X32 SM3 16 X28 14 5 Stop ring 6 GB95 85 SM1 4 X24 20 SM3 16 X28 SM3 16 X28 25 5 SM1 4 X 40 5 SM 1 4 X40 4 625 X45 cotton thread SM15 64 X28 12 62 5 X85 cotton thread Stop ring 5 GB896 86 SM15 64 X 28 13 5 Stop ring 26 GB894 1 86 SM1 4 X40 4 SM1 4 X40 5 SM9 64 X40 7 Note the figure inthe bracketis the parts quantity of MSK 8400BL 18 6 Stitch length adjustment components 9495 22 2 23 2l 6 Stitch length adjustment components SL sel e tr O Wo NI A V A Q N N NO IN N N N RRR Re RR HA bech RA A Q A Wo NO KF O WM SN A UV A o NO ra OS 1WF4 025 1WF4 030 1WF4 026 1WF4 014 1WF4 028 1WF4 046 1WF4 047 1WF4 027 1WF4 021 1WF4 048 1WF4 040 1WF4 049 1WF4 050 1WF4 051 1WF4 024 1WF5 006C3 43WF4 002 1WF4 022 1WF5 009 1WF4 013 1WF4 015 1WF2 038 1WF4 016 1WF4 053 Stitch length adjusting rocking lever Screw Set screw Stitch length link Eccentric shaft Reverse feed shaft Reverse feed crank Screw Screw Reverse feed lever Sliding block Crank spring Spring bracket Screw Stop pin Spring Screw bar O type seal Stitch length dial Screw Stitch length
17. lot 1 shown in the figure and pull it out down through the inner bobbin stop piece B Hold the thread end with left hand turn the hand wheel slowly and get the bobbin thread then draw them a little apart from the presser foot 5 Machine adjustment 1 Adjust the needle thread tension and bobbin A ZA ZA ZAZA ZA 7272 i AO SSSSSSSS thread tension All forms of stitches are shown in Fig 20 Normal stitch seam The normal stitch of sewing machine is shown in Fig stitch s abnormal the puckering and thread Needle thread too tight or bobbin thread too loose breakage will occur the needle thread tension and C Xx KIKIKIKIRIKIK lt k bobbin thread tension should be adjusted so that the SS SS A L L normal stitch can be obtained Needle thread too loose or bobbin thread too tight A If the stitch seam shows as Fig 17B indicates that the needle thread tension is too tight or the bobbin thread tension is too loose Please turn the thread tension nut counter clockwise to release the needle thread pressure or turn the bobbin lace adjusting screw with a screwdriver to increase the bobbin thread tension See Fig 18 19 B If the needle thread tension is too loose or the bobbin thread tension is too tight shown as Fig 17C Please turn the thread tension nut clockwise to increase the needle thread pressure or turn the bobbin lace adjusting screw with a screwdriver to decrease the bobbin thread tension See Fig 18 19 For s
18. mbly 1WF1 010B Thread guide bracket 1WF1 010C Thread guide plate 1WF1 010D Spring 1WF1 010E Thread guide bracket screw assembly 1WF1 010M Thread releasing pin short 1WF1 010H Thread tension nut 1WF1 010G Thread tension spring 1WF1 010S Thread releasing disc 1WF1 010F Thread tension disc 1WF1 010R Screw 1WF1 010Q Screw 1WF1 010J Thread controlling disc assembly 1WF1 026 Screw 1WF1 025 Stop plate 1WF1 010K Thread take up spring 1WF1 010I Thread take up spring shaft 1WF1 024 Screw 1WF1 010L Thread releasing pin long 1WF1 010W Thread tension retaining plate 1WF1 010P Thread releasing spring SM9 64 X40 4 5 SM 64 X40 4 5 1WF1 043 Spring retaining plate 2272 004 Screw 43 WF1 006 Rubber plug 35WF 1 006 Thread guide pin AHA KARA HH bech EA RA ki ki bi h N N e A N N Lu e N N N RR 2 MSK 8400BL 18 machine casting components l O a AER CH E Bi 20 BEE er qara LP qe 32 3 30 29 28 14 23 37 2 MSK 8400BL 18 machine casting components O ONIN a BW NO ra 44WF 1 003 43 WF1 002 44WF 1 002 44WF1 005 IWFl 015 IWFl 016 IWFl 017 IWFI Oll 22T1 007 1WF1 032 1WF1 038 1WF1 039 1WFI1 019 1WF1 030 1WF1 005 9WF1 001 IWF 1 002 1WF1 034 1WF1 036 1WF1 007 1WF1 006 1WF1 018 IWF1 013 1WF1 009 1WF1 008 IWFl 012 1WF1 021 1WF1 020 9WF1 004A 1WF1 043 1WF1 023 1WF1 033 1WF1 040 1WF1 029 1WF1 022 1WF1 031 1WF1 034 Machine bed Mac
19. ods apparel 9 5 12 7 16 19 25 4 mat etc 3 Machine installation 1 Machine installation 1 1 Location of the machine The machine must be located on the rigid and flat floor for ensuring its smooth operation and reducing its vibration Meanwhile a rubber mat should be inserted between the machine stand and the floor for further reducing therunning noise 1 2 Install the oil pan Fig 1 Put the oil pan into the table cutout and place the four cushions on the four corners of the cutout finally fix the cushion and oil pan on the table by nail 1 3 Install the machine head Fig 2 Make the hinge A of machine head engaged with hinge socket B on the table then turn the machine head till it is seated on the frame of table cutout please keep theturning freely 1 4 Install the presser foot lifting controller Fig 3 First connect the chain B with presser foot lift lever C by hooks A then install the pedal assembly D on the rung of the stand move the controller E leftward or rightward to make the chain in one line fix it with bolt and nut finally connect the hook with the controller E An automatic presser foot lifter is also available please refer to parts manual Part 7 Knee lifter and winding components 1 5 Install the thread stand Fig 4 The thread stand should be located on the right backside of the table Threading should be smooth when sewing When the machine head is turned backward it should not
20. on 1WF2 065 Bobbin 33TF 011 Oil pot 33TF 016 V belt O type 1050 1F 009 Needle DP X17 23 1F 011 Hexagon wrench S 2 5MM 1F 010 Hexagon wrench S 3MM 33TF 012 Screwdriver big 33TF 013 Screwdriver middle 33TF 014 Screwdriver small 58T0 007C Needle thread guide assembly 22T9 018 Machine head cover 1F 012 Oil tank 1F 014 Thread stand MSK 8420BL 18 33TF 019 Thread stand MSK 8400BL 18 22F9 012 Magnet O Oo JN A UA A LU N m KRA ked R RC RC RC bech ked GO SO Vi A WO N e O 22T9 001A2 Oil draining screw SM5 16 X25 10 22T9 001A3 Wash 43 WF3 002 Oil pan www reliablecorporation com
21. ot 9WF3 001 Outer presser foot 1WF3 002 Screw 1WF3 004 Presser bar bushing 1WF3 005 Presser bar springlever bracket 1WF2 006 Screw 1WF3 023 Presser foot liftingbar 1WF3 022 Screw 1WF3 007 Thread releasing plate 1WF3 008 Presser bar guiding bracket 1WF3 009 Screw 1WF3 003 Presser bar 1WF3 023 Screw 1WF3 006 Thread releasing springlever 1WF3 018 Screw 1WF3 019 D Crank assembly 1WF3 017 D Screw 43WF3 01 DB Block Solenoid assembly 43WF3 01 DA Screw Washer Washer N O J N Ln ZP LA Nee Stop ring 3 5 GB896 86 SM 1 64 X40 12 SM1 4 X24 16 5 For presser foot lifter by pedal For automatic presser foot lifter MSK 8420BL 18 MSK 8400BL 18 SM9 64 X40 8 5 SM 11 64 X 40 15 SM 1 4 X24 X23 8 Lubrication copmonents 21 4912 48 20 26 16 38 23 37 36 23 35 34 l 31 32 33 30 29 8 Lubrication copmonents O WON Ch Vi BW N KA 1WF6 001 1WF6 034 1WF6 003 1WF6 005A 1WF6 004 1WF6 007 1WF6 008 1WF6 009 1WF6 006 1WF6 010 1WF6 011 1WF6 002 IWF6 013 1WF6 012 1WF1 024 1WF6 042 1WF6 014 IWFI Oll 22T1 007 1WF6 021 IWFl 026 1WF2 053 1WF2 054 1WF6 027 1WF6 025 1WF6 024 1WF6 023 1WF6 026 1WF6 018 1WF6 019 1WF6 020 1WF6 017 1WF6 028 1WF6 035 1WF6 036 1WF6 038 1WF6 041 1WF6 040 1WF6 039 1WF6 034 1WF6 032 1WF6 037 1WF6 033 1WF6 030 1WF6 031 1WF6 029 1WF6 015 Oil felt press spring Screw Oil felt Oil pipe Oil wick Oil cup Oil cup cov
22. pe assembly 1WF5 024 Spring IWF5 045 Presser foot lifting crank rear 1WF4 018 Screw 1WF5 038 Presser foot lifting crank front 1WF5 028 Screw 1WFS 037 Bushing 1WFS5 030 Link lever 1WF5 029 Screw 1WF5 032 Screw 1WF5 033 Presser foot liftingmovable plate 1WF5 034 Rolling ball shaft 1WF5 035 Rolling ball Washer 1WF5 042 Screw 1WF2 027 Upper shaft timing pulley 1WF2 037 Lower shaft timingpulley 43WF3 004 Bobbin winding shaft JO 0 40 Screw 43 WF2 003 Upper shaft bushing middle SM1 4 X24 13 Wool felt SM9 32 28 SM 1 4 X 40 7 SM 1 4 x 40 4 O QO Q Ud LU N d 25 GB894 1 86 SM15 64 X28 8 5 SM15 64 X28 15 SM15 64 X28 12 SM15 64 X28 4 5 d3 GB896 86 SM 15 64 X28 10 5 SM15 64 X28 10 Washer 6 GB95 85 SM1 4 X24 16 SM1 4 X24 8 SM11 64 X40 6 Washer A GB848 85 SM11 64 40 10 N OND ND i nn NIN bech LA ed _d bech bech dd bech bech ax bech za ND m ON Fesch bech OD OD bech ed OD bech bech Fesch ke bech kd 4 Needle bar and lower feed components 2 3 4 04 6 97101219 384043 42 44 43454246 47 48 49 MSK 8400BL 18 lo 7074 73 7270 59 61 60 59 BT ch CO 6 66 64 65 54 S 56 62 58 45 5 56 55 54 4 Needle bar and lower feed components VD ON N Vi BW NY KA 1WF5 017 1WF5 018 1WF5 031 1WF5 019 1WF2 018 1WF2 017 1WF2 016 1WF2 011 1WF2 019 1WF2 012 1WF2 013 1WF2 014 1WF2 015 1WF
23. pecial sewing with special thread the tension needed can be obtained by adjusting the power and stroke of the thread take up spring 2 Adjust the pressure of presser foot Fig 20 The pressure of presser foot should be adjusted according to the thickness of the sewing materials If stitch on heavy weight materials the pressure should be increased by turning the pressure adjusting screw on the back of machine head clockwise on the contrary turn it counter clockwise 3 Adjust the safety clutch device The function of safety clutch device is to prevent the hook and toothed belt from being damaged when the needle thread is drawn into the hook for abnormal load during the operation 3 1 The function of safety clutch device Fig 21 A When the safety clutchis functioning the toothed belt will remove the load and the hook shaft will stop rotating only the upper shaft still rotates and the machine stops work B Clean off the needle thread which is draw into the hook C Turn the toothed belt shaft by hand to check if the hook shaft can turn smoothly then reset the safety clutch device Safety clutch device Toothed belt pulley White mark Re Eccentric pin Set screw Horizontal shaft crank right SS SD PEE Reference line YEA Upper layer feed decrease Special stud W7 AN Upper laveffeed increase lt A SO d 3 2 How to reset the safety clutch device Fig 22 A While press down t
24. sc 1WF1 010F Thread tension disc 1WF1 010R Screw 1WF1 010Q Screw 1WF1 010J Thread controlling disc assembly 1WF1 026 Screw 1WF1 025 Stop plate 1WF1 010K _ Thread take up spring 1WF1 003A Thread take up spring shaft SM9 64 X40 4 5 1WF1 024 Screw SM 64 X40 4 5 1WF1 010I Thread releasing pin long 1WF1 010W Thread tension retaining plate 1WF1 010P Thread releasing spring 22T2 004 Screw 43WF1 006 Rubber plug 35WF1 006 Thread guide pin 3 Upper shaft and presser foot components NA SD i zer l e ID V 5 gt N 7 2 7 N Lo BIRI o A EG 46 SI o 2 1 34 10 55 56 T 48 47 A 9 5 8 2A N N T A ei 515012 f s 20 Al 3028 3 Upper shaft and presser foot components 43WF2 001 Upper shaft 1WF2 022 Upper shaft bushing front 1WF2 023 Screw 1WF2 024 Oil felt 1WF2 021 Needle crank 1WF2 020 Screw 1WF2 007 Screw 1WF2 010 Screw 1WF2 009 Screw IWF5 026 Eccentric cam Stop ring 1WF5 041 Slot for frontcrank sliding block 1WF2 026 Stop ring 1WF2 030 Screw 1WF2 029 Screw Ball bearing 1WF2 031 Upper shaftbushing rear 1WF2 019 Screw 1WF2 032 Hand wheel 1WF2 044 Screw 1WF2 028 Toothed belt 1WF2 039 Spring plate 1WF2 037 Pin 1WF2 041 Spring Split stopring 1WF2 040 Stop plate 1WF2 048 Nail 1WF2 045 Braking plate 1WF2 042 Connector 1WF2 046 Bushing 1WF2 047 Screw 1WF2 038 Screw 1WF5 001 Nut 1WFS5 025 Link lever 1WF5 044 Bolt Washer 1WF5 023 Oil pi
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