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Baby Lock BL450 User Manual

Baby Lock BL450
68 pages
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SERVICE MANUAL
Model BL-101
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Baby Lock BL450 Specifications

General IconGeneral
BrandBaby Lock
ModelBL450
CategorySewing Machine
LanguageEnglish

Summary

Needle Position Adjustment

Adjusting Needle Holder Distance

Sets the distance of the needle holder for proper machine function.

Looper Position Adjustment

Looper Tip to Needle Clearance

Sets the precise clearance between the looper tip and the needle.

Needle Bar and Guard Checks

1. Needle Bar and Guard Checks

Performed checks and adjustments for needle bar and guard.

Needle Bar Height and Direction

Adjusts the vertical position and orientation of the needle bar.

Needle Guard Positioning

Sets the correct position of the needle guard.

2. Eccentric Cam Positioning

Positioning Needle, Looper, and Slide Block Cams

Positions eccentric cams for needle bar, lower looper rod, and slide block.

Feed Rock Eccentric Cam Positioning

Sets the position of the feed rock eccentric cam.

Upper Looper Rod Eccentric Cam Positioning

Sets the position of the upper looper rod eccentric cam.

3. Lower Looper Adjustments

Lower Looper Radius Adjustment

Adjusts the radius of the lower looper.

Lower Looper Timing Adjustment

Adjusts the timing of the lower looper.

Looper to Needle Opening

Sets the opening between the lower looper and needle.

4. Upper Looper Adjustments

Upper Looper Timing Adjustment

Adjusts the timing of the upper looper.

5. Thread Take-Up Lever Positioning

6. Feed Mechanism Adjustments

Main Feed Dog Height

Adjusts the height of the main feed dog.

Sub Feed Dog Height

Adjusts the height of the sub feed dog.

6. Feed Mechanism Adjustments (continued)

Feed Timing Adjustment

Adjusts the timing of the feed mechanism.

6. Feed Mechanism Adjustments (continued)

Differential Feed Length Adjustment

Adjusts the length of the differential feed.

8. Presser Foot Height and Direction

Adjusting Presser Foot Height and Direction

Adjusts the height and direction of the presser foot.

1. Needle and Presser Foot Height Adjustment

2. Adjustable Chaining Tongue Replacement

Knife Replacement Procedures

4. Lower Looper Adjustments

6. Upper Looper Adjustments

7. Feed Dog Height and Timing

Feed Height and Differential Feed

Adjusts feed dog height and differential feed.

Feed Timing for Differential Feed Models

Sets the timing for differential feed models.

Needle Threader System Removal

Needle Threader System Installation

1. Needle Adjustment

Adjusting Needle Height

Adjusts the needle height for optimal sewing.

2. Lower Looper Adjustments

3. Upper Looper Adjustments

4. Needle Guard Adjustments

4. Needle Guard Adjustments (continued)

Presser Foot Adjustment

2. Needle, Chain Looper & Presser Foot Adjustments

Needle Height Adjustment

Adjusts the height of the needle for different systems.

3. Feed Dog Height

Correct Feed Dog Height

Ensures correct clearance between presser foot and needle plate.

4. Tension Release & Dropped Feed Dog Adjustment

Dropped Feed Dog Adjustment

Adjusts the dropped feed dog mechanism.

7. Troubleshooting Guide

2. Needle and Presser Foot Height Adjustment

Needle Height Adjustment by Organ Type

Adjusts needle height based on organ type.

5. Upper Looper Adjustments

6. Feed Dog Adjustments

Feed Dog Height Adjustment

Adjusts the height of the feed dogs.

Feed Dog Position Adjustment

Sets the front and back position of feed dogs.

7. Differential Feed Adjustment

How to Adjust Differential Feed

Guides on adjusting differential feed for consistent movement.

8-1. Chaining Tongue Replacement (Except BL3ATW)

8-2. Chaining Tongue Replacement (BL3ATW)

9. Knife Replacement Procedures

11. Cutting Width Adjustment

12. Thread Sensor Cable Adjustment

Thread Sensor Cable Timing

Adjusts thread sensor cables for timing accuracy.

13. Jet-Air Threading Troubleshooting

Jet-Air Threading Troubleshooting Checklist

A checklist for troubleshooting Jet-Air threading issues.

Troubleshooting Specific Jet-Air Issues

Diagnoses issues like pump leaks or pipe movement.

14. Jet-Air Threading Adjusting Guide

14. Jet-Air Threading Adjusting Guide (continued)

15. Jet-Air Threading Replacement Guide

17. Looper Driving Cam and Roller Replacement

17. Looper Driving Cam and Roller Replacement (continued)

Adjustment and Checkings

Procedures for adjusting and checking various machine parts.

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