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Parts Manual - English - Page 2
LS2-B877- MADE IN JAPAN
2*St*Illgitig tVE::
Twin needle unison feed lock stitcher with large hook
BROTHER INDUSTRIES, LTD. MADE IN JAPAN
® -5 :
F/ Standard
-305: #;4,139+4 vM•yan/ Thread trimmer + Quick reverse (Solenoid type)
1 *Sitattirig
/
Single needle unison feed lock stitcher with large hook
BROTHER INDUSTRIES, LTD.
• LT2-B878-
Parts Manual - English - Page 21
...SUPPORT BAR, ;SPRING SPRING, COMPRESSION BELL CRANK ROLLER STUD ASSY GUIDE... PLATE SCREW, PAN SM4.37-40X12 WASHER, PLAIN S 4.37 SCREW, PAN SM4.37-40X10 WASHER, PLAIN 54.37
118-W77-206 14 G . No/ Upper feed mechanism I Obertransportvorrichtung I
J't titig*-9--itm.tr,
ttA -4, -iii' s
/.oL, :',/ l=1 *.:;/.7-.i. CODE Q'TY
L >)( -f
NAME OF PARTS...ECCENTRIC WHEEL W/S, ;U-FEED SET SCREW, SOCKET (CP...
Parts Manual - English - Page 29
...CODE Q'TY
L:-" -f
NAME OF PARTS
RM
3 4 5 6-1 6-2 7 8 9 10 11 12-1 12-2 12-3 12-4 16 17
062782512 100197002 509259001 509260001 509261001 507420000 507419001 507417001 013710512 150967101 538213051 148005001 025710232 110161006 513021001 013711012
2 •)-, 635-28X25
2 if if 4
2 t 7 7 .x 71a i
2 7 7 h I) > /A
2 A 7 A I Rotary hook mechanism (B878) / Greifervorrichtung (B878...LEVER SET ...
Parts Manual - English - Page 31
....35 h ?II) 1 7* h 96.359 1 /9 > 5t+1 7, > 5il-R.* 1 9 i *5 1 7th 1* 96.359 *3,. 1 71- h X*56.35 Fill)
F-LIFTING ECCENTRIC WHEEL ASSY SET SCREW, SM6.35 TIMING PULLEY ASSY, D TIMING PULLEY, D LOCK LEVER STUD, ; CODE Q'TY
b :-.• X -I
NAME OF PARTS
RIV
1
538295000 1 tvF9"-r i 9 ki. T RI*/ Lower shaft mechanism / Untere Welle /Mecanisme de l'arbre inferieur/ Mecanismo del eje inferior...
Instruction Manual - English and Spanish - Page 16
... height and lift amount 63 10-5-5. Upper and lower shaft timing adjustment ....... 71 10-9. Changing the knee lifter heaviness 75
11. REPLACING THE FIXED KNIFE AND MOVABLE KNIFE (-305 76
12. Replacing the rotary hook 91 13-2. Replacing the upper thread tension assembly (B878 95
14. SAFETY EQUIPMENT 96
15. TROUBLESHOOTING GUIDE 100
LS2-B877, LT2-B878 (English)
Instruction Manual - English and Spanish - Page 26
...comme indiqué dans l'illustration ci-dessous.
• La parte de arriba de la mesa debe ser de 40 mm de espesor...243;n. Head rest hole Loch für Oberteilstütze Trou du support de tête Orificio de apoyo de cabeza
Motor mounting holes ...mm
15.5±0.5 mm
B B
7
LS2-B877, LT2-B878 NÄHTISCH UND MOTOR (-5) 4. TABLE DE TRAVAIL ET MOTEUR (-5) 4. 4. NÄHTISCH UND...
Instruction Manual - English and Spanish - Page 31
...pied presseur t en utilisant le releveur r de barre de pied presseur.
2. MONTAGE 5. INSTALACION
5-3. Installing the knee lifter assembly 5-3. r t
2.
Colocar el conjunto del levantador de rodilla q en el eje...debajo de la parte superior de la placa de aguja. 2) Bajar el prensatelas t usando el levantador de barra de prensatelas r.
12
LS2-B877, LT2-B878 5. Installation de l'ensemble de...
Instruction Manual - English and Spanish - Page 37
...;n del soporte del carrete
Assemble the cotton stand q while referring to the cotton
stand instruction manual, and then install the cotton stand
q to seize.
1. Assembler la broche porte-bobine q en se reportant au
w
manuel d'instructions de la broche porte-bobine, puis installer la broche porte-bobine q sur le coin situé à l'extrême...
Instruction Manual - English and Spanish - Page 64
... mm.
45
LS2-B877, LT2-B878 Desconectar el interruptor principal antes de ajustar el prensatelas caminante y el prensatelas interior, de lo contrario la máquina funcionará si por error se pisa el pedal, lo ...foot q and inner presser foot w to move up and down alternately. • The standard setting is switched off as a result of
the motor's inertia.
Se debe esperar hasta que el ...
Instruction Manual - English and Spanish - Page 69
...Brother ou à un électricien qualifié pour effectuer des travaux d'entretien ou de vérification du système après qu'on effectue des réglages, veiller à respecter scrupuleusement toutes les précautions de sécurité.
50
LS2-B877, LT2-B878...
maintenance • When replacing consumable parts such as a result ... sure to re-install them to carry ...
Instruction Manual - English and Spanish - Page 94
...hintere Abdeckung wieder an. s Méthode de commutation 1. Aplicar grasa al hombro del tornillo de hombro e. 4. STANDARD ADJUSTMENTS 10. Install the rear cover w. Retirer la vis d'épaule e, puis retirer la tige de connexion
q de l'orifice de vis A. 3.... Zapfen der Zapfenschraube e mit
Fett. 4. Desmontar la cubierta trasera w. 2. Instalar la cubierta trasera w.
75
LS2-B877, LT2-B878
Instruction Manual - English and Spanish - Page 119
... is switched off as a result of purchase or your nearest
Brother dealer. Where to check the following before starting work. Adjust the upper thread tension.
• Is the rotary hook, feed dog or other part damaged? Is the needle tip blunt?
LS2-B877, LT2-B878 (English)
100 Page
- - 14
2. Clean the rotary hook.
•...
Instruction Manual - English and Spanish - Page 120
...Problem...LT2-B878 (English) tion manual
66
5.
If the bobbin is damaged, smooth it with a pulley which is incorrect, install...replace the motor pulley. * Depending on the type of the feed dog correct?
Reduce the tension of the thread take -up springs.
• Are the ranges of your particular model and sewing specifications... feed timing incorrect?
TROUBLESHOOTING GUIDE 15. Is the ...
Instruction Manual - English and Spanish - Page 121
... amount should not be more than the light-alloy bobbins specified by Brother.
29 · 30
26 28 29 · 30
28
LS2-B877, LT2-B878 (English)
102 TROUBLESHOOTING GUIDE 15. RECHERCHES DE PANNES 15. GUIA PARA LA LOCALIZACION DE FALLAS
Where to install them correctly.
92
9. Lower thread trimming
• Are the tips of the...
Instruction Manual - English and Spanish - Page 122
...has been turned, turn it again to set it to leave any pieces of broken ...
12. GUIA PARA LA LOCALIZACION DE FALLAS
Problem 10. Make the thread take -up stop...-B877, LT2-B878 (English) Caution
• It is • Is the needle up spring tensions too strong? TROUBLESHOOTING GUIDE 15. Polish...
Where to remove the damage, or replace the damaged knife.
• Are the tension discs moving...
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