Errors and Solutions, Ricoma

Ricoma MT-1501 Series: Essential Maintenance Guide

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Quick answer: Regular maintenance for your Ricoma MT-1501 series machine involves daily cleaning and lubrication, weekly checks of thread path components, and monthly inspections of critical wear parts like bobbin cases, needles, and rotary hooks to ensure optimal performance and longevity.

Difficulty: moderateTime: ~30 minTools: Small flathead screwdriver, Phillips head screwdriver, Tweezers, Small brush (lint brush), Vacuum cleaner with small nozzle attachment

Maintaining your Ricoma MT-1501 series embroidery machine is crucial for its longevity, consistent stitch quality, and preventing costly downtime. Regular preventative maintenance, as outlined in this guide, will help you identify and address minor issues before they become major problems. This guide provides a practical schedule and focuses on common wear items you can inspect and replace yourself.

Two-minute checks before you open anything

  • Check for any loose threads or lint around the needle bar area and rotary hook.
  • Ensure the bobbin case is seated correctly and the bobbin is wound evenly.
  • Verify that the thread path is clear and free of tangles or obstructions.
  • Listen for any unusual noises during machine operation.
  • Check that the needle is straight and not bent or dull.

1. Needles high likelihood

How to tell

Frequent thread breaks, skipped stitches, fabric damage (holes or snags), dull or bent needle point, or unusual noise during stitching.

Fix

  1. 1. Turn off the machine power.
  2. 2. Loosen the needle clamp screw for the affected needle bar.
  3. 3. Carefully remove the old needle.
  4. 4. Insert a new needle, ensuring the scarf (the long groove) faces the back of the machine and it's pushed all the way up into the needle bar.
  5. 5. Tighten the needle clamp screw securely.
  6. 6. Perform a test sew on scrap material to confirm proper stitching.

2. BC-DBZ(3)-NBL Small L Pigtail Embroidery Bobbin Case high likelihood

How to tell

Inconsistent bobbin tension, frequent bobbin thread breaks, loose stitches on the underside, birdnesting, or visible nicks, burrs, or wear on the bobbin case body, tension spring, or pigtail thread guide.

Fix

  1. 1. Turn off the machine power.
  2. 2. Open the rotary hook cover and remove the bobbin.
  3. 3. Carefully remove the existing bobbin case.
  4. 4. Inspect the old bobbin case for any damage, especially the pigtail and the tension spring. Compare it to a new one.
  5. 5. Insert a new BC-DBZ(3)-NBL Small L Pigtail Embroidery Bobbin Case, ensuring it clicks securely into place.
  6. 6. Insert a bobbin, thread it correctly through the tension spring and pigtail.
  7. 7. Test bobbin tension using a bobbin tension gauge or by pulling the thread. Adjust if necessary.
  8. 8. Perform a test sew on scrap material.

Always keep spare bobbin cases on hand as they are critical wear items and can be easily damaged.

Parts you may need for Ricoma MT-1501

In stock, tested before dispatch, Buyer Protection on every order. Part types for this problem: Rotary hooks & bobbin cases, Needles & needle bars, Thread path & tension, Cutters & trimmers.

All Ricoma MT-1501 parts → Rotary Hooks & Bobbin Cases → Needles & Needle Bars → Thread Path & Tension →

3. Rotary Hook medium likelihood

How to tell

Skipped stitches, thread breaks (especially bobbin thread), noisy operation from the hook area, poor stitch quality, or visible nicks, burrs, or excessive wear on the hook point or race.

Fix

  1. 1. Turn off the machine power.
  2. 2. Remove the needle plate, bobbin case, and bobbin.
  3. 3. Carefully inspect the rotary hook for any damage, burrs, or thread residue. Use a magnifying glass if available.
  4. 4. If minor burrs are present, they can sometimes be carefully polished with very fine emery cloth (consult your manual).
  5. 5. If the hook is significantly damaged or worn, it needs replacement. This is a more involved procedure, often requiring timing adjustments.
  6. 6. For replacement, loosen the screws holding the hook in place, remove the old hook, and install a new one. Ensure correct timing according to your machine's service manual.
  7. 7. Reassemble the bobbin case, needle plate, and perform a test sew.

4. Thread Guides and Tension Discs medium likelihood

How to tell

Frequent thread breaks, shredding thread, inconsistent tension, or visible grooves, nicks, or rough spots on ceramic thread guides, tension discs, or the thread take-up spring.

Fix

  1. 1. Turn off the machine power.
  2. 2. Carefully inspect all thread guides from the thread cone to the needle for any damage or sharp edges. Pay close attention to ceramic guides and the pigtail guides.
  3. 3. Inspect the tension discs for cleanliness and smoothness. Ensure they open and close freely.
  4. 4. If a guide is nicked, it should be replaced. If tension discs are dirty, clean them thoroughly with a thin piece of cloth or dental floss.
  5. 5. If the take-up spring is bent or weak, it may need replacement.
  6. 6. Replace any damaged components. Ensure all parts are correctly reassembled and thread path is smooth.
  7. 7. Perform a test sew, checking for consistent tension and no thread breaks.

5. Ricoma 80320221 Picker Solenoid low likelihood

How to tell

Thread trimming issues, such as the thread not being cut cleanly, thread tails being too long or too short, or the picker not moving correctly during the trim cycle. You might hear a clicking sound but no movement, or no sound at all.

Fix

  1. 1. Turn off the machine power and unplug it.
  2. 2. Locate the picker solenoid, usually found in the trimming mechanism area (refer to your machine's parts diagram, section 05.Trimming Part).
  3. 3. Disconnect the electrical connector from the solenoid.
  4. 4. Remove the mounting screws holding the solenoid in place.
  5. 5. Carefully remove the old solenoid. Note its orientation and how it connects to the picker mechanism.
  6. 6. Install the new Ricoma 80320221 Picker Solenoid, ensuring it's correctly aligned with the picker arm.
  7. 7. Secure it with the mounting screws and reconnect the electrical connector.
  8. 8. Power on the machine and perform a test trim cycle to ensure proper function.

Maintenance schedule

WhenWhat to doWhy
Daily (or every 8-10 hours of operation)Clean the rotary hook area and bobbin case.Removes lint and thread residue that can cause skipped stitches, thread breaks, and poor stitch quality.
Daily (or every 8-10 hours of operation)Oil the rotary hook and needle bars.Lubricates moving parts to reduce friction, prevent wear, and ensure smooth operation. Refer to your manual for specific oiling points.
Daily (or before each major project)Inspect needles for sharpness and straightness.Dull or bent needles cause skipped stitches, thread breaks, and fabric damage. Replace as needed.
Weekly (or every 40-50 hours of operation)Clean under the needle plate.Removes accumulated lint and debris that can interfere with thread trimming and stitch formation.
Weekly (or every 40-50 hours of operation)Clean all thread path components (tension discs, thread guides, take-up lever).Ensures smooth thread flow, consistent tension, and prevents thread shredding or breaks.
Weekly (or every 40-50 hours of operation)Inspect bobbin cases for wear or damage.Worn bobbin cases lead to inconsistent tension and thread issues. Replace if nicks or burrs are found.
Monthly (or every 150-200 hours of operation)Inspect rotary hook for nicks or burrs.Damage to the hook can cause thread breaks and poor stitch quality. Polish minor burrs or replace if severely damaged.
Monthly (or every 150-200 hours of operation)Check and clean the thread trimming mechanism.Ensures clean thread cuts and prevents thread jams. Remove lint and check for proper blade function.
Monthly (or every 150-200 hours of operation)Inspect belts for wear or tension.Worn or loose belts can affect machine timing and movement accuracy. Consult your manual for proper tensioning.
Every 6 months (or every 500 hours of operation)Lubricate X and Y axis rails and lead screws.Ensures smooth frame movement and prevents wear on critical drive components. Use appropriate grease/lubricant as per manual.
Annually (or every 1000 hours of operation)Professional service and calibration.A qualified technician can perform deeper cleaning, inspect internal components, check timing, and calibrate the machine for optimal performance.

Stop and call a technician if

  • If you experience persistent error codes that cannot be resolved with basic troubleshooting.
  • If the machine makes unusual grinding or knocking noises that don't stop after cleaning and lubrication.
  • If you suspect major mechanical issues like motor problems, timing issues, or damaged circuit boards.
  • If you are uncomfortable performing a repair that requires significant disassembly or specialized tools.
  • For annual professional servicing and calibration.

Prevent it coming back

  • Always use high-quality threads and needles appropriate for your fabric and design.
  • Keep your workspace clean and free of dust and lint, which can easily get into machine mechanisms.
  • Avoid forcing the machine to sew through overly thick or unsuitable materials.
  • Ensure hoops are properly tensioned and secured to prevent them from shifting or hitting the needle plate.
  • Follow the manufacturer's recommended oiling schedule and use only approved sewing machine oil.
  • Regularly check for loose screws and tighten them as needed to prevent vibration-related issues.

Frequently asked questions

How often should I oil my Ricoma MT-1501?

You should oil your Ricoma MT-1501 daily or every 8-10 hours of operation, especially the rotary hook and needle bars. Always refer to your machine's operation manual for specific lubrication points and recommended oil types and intervals.

What kind of oil should I use for my embroidery machine?

Always use high-quality, clear, non-staining sewing machine oil (often referred to as 'white oil' or 'sewing machine oil'). Avoid using general-purpose oils like WD-40 or automotive oils, as they can gum up mechanisms and stain fabric.

Why is my machine breaking needles frequently?

Frequent needle breaks can be caused by several factors: a bent or dull needle, incorrect needle size for the fabric/thread, hoop hitting the needle plate, loose hoop, incorrect needle depth, burrs on the needle plate, or timing issues. Check these common causes first.

How do I clean the tension discs on my Ricoma MT-1501?

To clean tension discs, raise the presser foot to open the discs. Use a thin piece of sturdy fabric, dental floss, or a specialized tension disc cleaner to slide between the discs and remove any lint, dust, or thread residue. Repeat for all tension assemblies.

When should I replace my bobbin case?

Replace your bobbin case if you notice consistent bobbin thread issues (breaks, tension problems) that aren't resolved by cleaning or adjusting tension, or if you see visible nicks, burrs, or wear on the case, especially on the pigtail or tension spring. It's a high-wear item.

From the Ricoma MT-1501 parts book

The assemblies involved in this problem, as the manufacturer lists them. Open a section to see every part number, which ones we stock, and get a price on the rest.

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