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Sewing Machine
LU-2828-7
JUKI LU-2828-7 User Manual
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– 70 –
(22) Replacing the motor
W
ARNING :
T
urn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Standard adjustment
❸
❷
❹
❺
(Screw No.1)
❺
(Screw No.2)
❼
❶
❽
❾
(Screw No.1)
❻
(Screw No.1)
❾
(Screw No.2)
❻
(Screw No.2)
Code portion
Timing belt
81
83
Table of Contents
Default Chapter
12
Table of Contents
12
Specifications
13
Standard Adjustment
16
Needle Entry Position (Standard Gauge Type)
16
Needle Entry Position (Europe Gauge Type)
18
Height of the Feed Dog
20
Height of the Hook
20
Adjusting the Opener
22
Clearance of Opener
22
Opener Timing
24
Needle-To-Hook Timing
26
Height of the Needle Bar
26
Needle-To-Blade Point of Hook Timing
26
Adjusting the Hook Needle Guard
26
Lift of the Presser Foot
28
Hand Lifter
28
Knee Lifter (Without Thread Trimmer Only)
30
Automatic Presser Foot Lifter (Machine with Thread Trimmer Only)
32
Feed Adjustment
34
Horizontal Feed Cam Timing
34
Vertical Feed Cam Timing
34
Alternate Momentum
36
Top Feed Cam Timing
36
(Adjusting the Bottom Feed Amount)
38
Stitch Length of Forward/Reverse Feed
40
Position of the Reverse Feed Control Lever
42
Safety Clutch
44
Balancer
46
Reverse Feed Cylinder
48
Lubrication
52
Thread Trimmer Device (Except for LU-2828-6 and 2828-7)
54
Position of the Counter Knife and the Clamp Spring
54
Position of the Counter Knife Base
56
Vertical Position of the Moving Knife
58
Thread Trimmer Cam Timing
60
Position of the Thread Trimmer Cam
62
Adjusting the Knife Pressure
62
Adjusting the Thread Trimmer Components for LU-2828-6 and 2828-7
64
Adjusting the Moving Knife, the Counter Knife and the Bobbin Thread Clamp
64
Adjusting the Thread Trimmer Cam Timing
66
Detection Switch of the Amount of Alternate Vertical Movement
68
DL Device
70
Adjusting the Bottom Feed Momentum
72
Feed Adjustment
74
Lu-2828-6, 2828-7
76
Lu-2818-7, 2868-7
78
Replacing the Motor
82
Adjusting the Condensation Stitch (LU-2828-6, 2828-7)
84
Condensation Cylinder (LU-2818-7, 2868-7)
84
Portion to Which LOCKTITE Is Applied
86
Selective Parts and Consumable Parts
87
Applying Grease
89
Greasing Points
89
Needle Bar Rocking Base
89
Alternate Vertical Change Base
90
Horizontal Feed Change Base
90
Greasing Point Indication Drawing (* Indicating the Points Where Grease Is Applied at Shipment.)
91
Engraved Marker Dots on the Handwheel (for the Machine with Thread Trimmer Only)
111
Machine Head Wiring
112
Connectors Coming from Machine Head (Connect to Control Box)
112
Connectors that Are Connected in the Head Cover
113
Wiring Diagram
113
Details of Connectors
114
Connectors Coming from Machine Head (Connect to Control Box)
117
Lu-2828-7
117
Connectors that Are Connected in the Head Cover
118
Wiring Diagram
118
Details of Connectors
119
Connectors Coming from Machine Head (Connect to Control Box)
122
Lu-2818-7, 2868-7
122
Connectors that Are Connected in the Head Cover
123
Troubles and Corrective Measures
124
With Regard to Sewing
124
With Regard to Thread Trimming
129
Lubrication Route Diagram
135
Lu-2860, 2860-6, 2860-7, 2868-7
136
Drawing of Table
137
For Without Thread Trimming (LU-2810, 2860)
137
For SC-922 (LU-2810-7, 2860-7)
138
For V-Belt (Machine with Thread Trimmer) (LU-2810-6, 2860-6)
139
For SC-922 (LU-2810-7, 2860-7, 2828-7, 2818-7, 2868-7)
140
For V-Belt (Machine with Thread Trimmer) (LU-2810-6, 2860-6, 2828-6)
141
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JUKI LU-2828-7 Specifications
General
Brand
JUKI
Model
LU-2828-7
Category
Sewing Machine
Language
English
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