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Manuals
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Singer Manuals
Sewing Machine
391A1
Service manual
Singer 391A1 Service Manual
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Table Of Contents
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Table of Contents
Contents
Description
Setting up
Installation of Machine on Base
Installation of Knee Lifter on Machine Base
Lubrication
Oil Reservoir
Oil Flow Window
Speed
Needles
To Set the Needle
Thread
To Thread the Machine
To Remove the Bobbin
Upper Threading
Removing Bobbin Case from Sewing Hook
To Wind the Bobbin
To Thread the Bobbin Case
To Replace the Bobbin Case
To Prepare for Sewing
To Start Sewing
To Remove the Work
Thread Tensions
Needle Thread Tension
Perfect Stitch
Needle Thread Tension too Tight
Bobbin Thread Tension
To Regulate Presser Foot Pressure
Hints for Perfect Operation
To Regulate the Length of Stitch
To Set the Needle Bar at the Correct Height
Preparation
To Set Check Spring Height
To Set Check Spring Tension
To Set the Presser Bar at the Correct Height
Checking Height of Presser Bar
Setting Presser Bar at Correct Height
To Time the Sewing Hook
To Set the Sewing Hook Sidewise in Relation to the Needle
To Time the Feed
To Set the Feed Dog at the Correct Height
Adjusting Height of Feed Dog
Instructions for Removal and Replacement of Principal Assemblies
To Remove the Sewing Hook
Replacing Oil Filter
To Replace Oil Filter
To Replace the Sewing Hook
To Remove and Replace the Hook Shaft
The Oil Pump
To Remove and Replace the Upright Arm Shaft
To Remove and Replace the Needle Bar
To Remove and Replace the Presser Bar
To Remove the Needle Thread Take-Up
To Replace the Needle Thread Take-Up
To Remove and Replace Arm Side Shield Wick, Needle Bar Wick
To Remove Oil Wick Holder
The Arm Shaft
Loosening the Feed Eccentric
To Install New Oil Wick Holder
Replacing Oil Wick Holder
Incorrect Installation
Replacing the Arm Shaft
Position of Needle Bar Crank, During Removal of Shaft
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