Singer 201 Repair Manual

The Singer 201 is a classic straight-stitch sewing machine known for its durability and precision. This repair manual covers essential information for maintenance, troubleshooting, and repair of the Singer 201 model. Below are key sections covering safety, features, disassembly, adjustment, lubrication, common issues, and parts identification.

Features at a Glance

Key components: Cast-iron body, rotary hook system, built-in motor, reverse stitch lever, tension assembly, bobbin case, and stitch length regulator.

Feature	Description
Stitch Type	Straight stitch only
Hook System	Rotary hook, Class 66 bobbin
Stitch Length	Adjustable via dial (0-4 mm)
Reverse Lever	For back-tacking and securing stitches
Tension Assembly	Upper thread tension control with dial
Presser Foot Pressure	Adjustable via screw on top of machine
Motor	Built-in, belt-driven
Light	Integrated bulb for work area illumination
Bobbin Winder	Located on top right of machine head
Feed Dogs	Drop feed mechanism for darning/free motion

Safety Precautions

Always unplug the machine before performing any repairs or maintenance.

1. Disconnect Power: Unplug from electrical outlet before starting work.
2. Secure Machine: Place machine on a stable, flat surface.
3. Use Proper Tools: Employ correct screwdrivers and wrenches to avoid damage.
4. Handle Needles with Care: Always point away from yourself and others.
5. Avoid Pinch Points: Keep fingers clear of moving parts during testing.

WARNING! The machine is heavy; lift with proper support to avoid injury. Ensure all electrical components are disconnected.

Tools Required

Basic toolkit for Singer 201 repair:

1. Screwdrivers: Small flat-head and Phillips head.
2. Needle Nose Pliers: For gripping small parts.
3. Lint Brush: For cleaning lint and debris.
4. Sewing Machine Oil: High-quality lubricant.
5. Timing Gauge (optional): For precise hook-to-needle alignment.
6. Soft Cloth: For wiping surfaces.
7. Flashlight: For inspecting internal mechanisms.

CAUTION! Use tools appropriate for the task to prevent stripping screws or damaging components.

Specifications

• Model: Singer 201
• Stitch Type: Straight stitch
• Stitch Length: 0 to 4 mm (adjustable)
• Bobbin Type: Class 66 metal bobbin
• Needle System: 15x1 (standard domestic needle)
• Motor: Built-in, 0.5 Amp, 110V AC
• Weight: Approximately 30 lbs (13.6 kg)
• Dimensions: 15" L x 7" W x 12" H (machine head)
• Year of Manufacture: 1930s-1950s (varies by serial number)

Machine Disassembly

Step-by-step guide to safely disassemble key components for repair.

1. Remove Needle Plate: Unscrew the two screws and lift plate.
2. Access Bobbin Case: Remove bobbin case and hook race.
3. Remove Face Plate: Unscrew face plate to access upper tension assembly.
4. Remove Motor Belt: Slide belt off motor pulley and handwheel.
5. Remove Handwheel: Use a screwdriver to loosen setscrew and slide off handwheel.
6. Remove Upper Shaft Bearings (if needed): Requires special tools; refer to advanced manual.

Tip: Take photos during disassembly to aid in reassembly. Keep screws organized in labeled containers.

Timing Adjustment

Proper timing ensures the hook passes the needle at the correct point to form stitches.

1. Set Needle at Highest Position: Rotate handwheel toward you until needle bar is at its highest point.
2. Check Hook Position: The tip of the hook should be aligned with the center of the needle, about 1/16" above the eye.
3. Adjust if Needed: Loosen the setscrew on the hook drive gear (located under the machine). Rotate the hook slightly until aligned, then retighten setscrew.
4. Test: Manually rotate handwheel to ensure smooth hook movement without hitting needle.

WARNING! Incorrect timing will cause skipped stitches or thread breakage. Make small adjustments and test frequently.

Needle & Hook Alignment

Critical for proper stitch formation and preventing needle breakage.

1. Insert Needle Correctly: Flat side of needle shank faces the back of the machine. Tighten needle clamp screw firmly.
2. Check Clearance: With needle at its lowest position, there should be a slight clearance (about the thickness of a business card) between the needle and the hook.
3. Adjust Hook Position: If clearance is incorrect, loosen hook setscrew and reposition hook. Retighten and recheck.
4. Verify Timing: Recheck timing after any hook adjustment.

CAUTION! A bent needle or misaligned hook can cause permanent damage. Replace needle if bent.

Lubrication Guide

Regular lubrication is essential for smooth operation and longevity.

Points to oil (use sewing machine oil only):

• Upper shaft bearings (both ends)
• Hook race and rotary hook
• Presser bar lever pivot points
• Take-up lever pivot
• Bobbin winder mechanism
• Motor bearings (if accessible)

Procedure: Apply one drop of oil to each point. Run machine without thread for a few minutes to distribute oil. Wipe away excess.

CAUTION! Do not over-oil. Excess oil can attract lint and stain fabric.

Common Problems & Solutions

Symptom	Possible Cause	Corrective Action
Skipped stitches	Incorrect timing, bent needle, wrong needle type	Check and adjust timing; replace needle with 15x1.
Thread breaking	Incorrect tension, burr on hook or needle plate	Adjust tension; inspect for burrs and smooth with fine emery cloth.
Machine jams or won't run	Thread jam in hook, worn motor belt	Remove bobbin case and clear thread; replace belt if cracked or loose.
Uneven feed	Worn feed dogs, incorrect presser foot pressure	Replace feed dogs; adjust presser foot pressure screw.
Noisy operation	Lack of lubrication, loose parts, worn bearings	Oil machine; tighten screws; inspect bearings for wear.
Bobbin won't wind	Engaged bobbin winder brake, worn tire	Disengage brake by pushing bobbin winder to stop position; replace rubber tire on winder.

Parts Diagram & List

Key replacement parts for Singer 201 (refer to Singer part numbers):

• Needle: 15x1 (Singer part # 2020)
• Bobbin Case: Class 66 (Singer part # 45732)
• Motor Belt: Round belt, 12" length (Singer part # 180689)
• Hook Race: Complete assembly (Singer part # 35717)
• Feed Dogs: Set of two (Singer part # 35751)
• Light Bulb: #57 bulb, 6V (Singer part # 357496)
• Tension Assembly: Complete unit (Singer part # 351160)

Note: Always verify part numbers with your machine's serial number. Consult a detailed parts diagram for exploded view.

Reassembly & Testing

After repair, reassemble in reverse order of disassembly.

1. Reinstall all components, ensuring screws are snug but not overtightened.
2. Re-thread machine with good quality thread.
3. Insert a new needle.
4. Plug in machine and run at slow speed to test.
5. Sew on a scrap fabric to check stitch quality, tension, and feed.
6. Make final adjustments to tension or stitch length as needed.

Final Check: Ensure no unusual noises, smooth fabric feed, and consistent stitch formation.

Service Support: For genuine Singer parts and advanced technical support, contact Singer Customer Service or visit www.singer.com.