Firefly Power FAQ

Power Issues?

Most Likely Scenario: The fuse needs to be replaced or reset. Replace the fuse with a 3 to 10 amp fuse of the size that is in the holder. Take the fuse to a auto part store. Use the largest fuse that is not over 10 amps.

If your Firefly has a red button on the back, pressing that button will reset the fuse and resolve the issue.

If your Firefly does not have a red button on the back, open up the base to replace the fuse using the image below.

  1. Remove the head of the Firefly from the Base
  2. Turn the base over
  3. Unscrew the 4 screws that hold the lid onto the base
  4. The motor will be sitting in place (it is not secured in permanently, but fits like a puzzle).
  5. The fuse is on a red thick wire. 
  6. Push and twist the wire to unlock and open the fuse

Charger Troubleshooting

  • Plug the charger into the wall. The light should turn green. If the light does not turn green, or if it does not turn on at all - you have a bad charger. 
  • Plug the charger into the Firefly. The light should turn red, meaning the battery is taking a charge. If the light does not turn red, the battery is fully charged or is a bad battery.

Battery Troubleshooting

If the Firefly is being very slow, your battery is running low on charge. Let the battery charge overnight. If the Firefly is still running sluggish after being plugged in overnight, you likely have a bad battery. You can purchase a new battery on our Replacement Parts page. 

  • If the light on the charger stays green and the Firefly is not holding power - you will need to ship your Firefly to SpinOlution for service. 
  • ANOTHER SCENARIO: The other end of the red wire is securely attached to the speed controller. If the wire is loose - that is a problem. Re-secure the wire.
  • ANOTHER SCENARIO: The black wire to the Battery should also be secured into place. If it is off - that is a problem. Re-secure the wire to create the electric loop required for the Firefly to function. 


  • It is best that the Firefly be charged overnight after each use.
  • It is not required to leave the charger or the Firefly plugged in all the time.
  • It is best not to let the battery run on a very low charge. Deep discharge is not good for long term battery life.
  • By keeping your Firefly charged, the battery should last from 3 to 10 years.


Modular Design FAQ

  • If the MACH III head is secured to the base from the back it will fit onto the Firefly and can be screwed in for carrying by the handle. This is what makes the MACH III and Firefly a MODULAR series - you can switch the heads between the bases. The Firefly is essentialy an Electric MACH III.  
  • If the MACH III head is secured to the base from the side it will fit onto the Firefly but it cannot be secured to the Firefly. This does not effect performance, but it does mean that you will not be able to carry the MACH by the handle. 
  • The newer heads (new: secured to the base from the back) will fit the older MACH III but cannot be secured (by the screw) into the base. This does not effect performance, but it does mean that you will not be able to carry the MACH by the handle. 


Flyer FAQ

Upgrading Wooden Pegs to Nylon Pegs

Email your dealer a picture of your current flyer and your wheel type so they can confirm the size (4, 8, 16, 32, 64) you need to upgrade. 

When you receive your new flyer arms, remove the old arms from your flyer by unscrewing the two screws in the back of the flyer (one screw per arm), and attach the new arms when they arrive with one screw each and you'll be ready to spin. When you need to replace a peg in the future, simply unscrew the peg from the bottom of the flyer and replace it with a new peg. 


Straightening a 1/4" Flyer Rod

  1. Remove the orifice bar and bobbin
  2. Turn the flyer rod by have until the rod is at the highest point
  3. Pull the front tip down until it is true
  4. Continue steps 2 & 3 until the rod is fairly true.

If the flyer still isn't turning true

  1. Loosen the 4 screws on the back ring of the flyer
  2. Adjust the flyer to turn true
  3. Tighten the screws

"Should my flyer be able to move back and forth?"

YES There is no problem with the flyer moving front to back. We want some movement so the bearings do not bind. If you are concerned with the amount of movement your flyer has, please send us photos of video of the movement so we can confirm it is in the range of normal. If it moves too much, we will send you washers to limit the range of movement. 


Bobbin FAQ

Bobbin Guarantee.jpg

Note: Old style bobbins that do not have space for the magnet will not fit magnetized wheels. 

New style bobbins that do have space for the magnet will fit non-magnetized wheels. If you want to replace your old bobbins with new bobbins, we recommend selling your old bobbins on our Facebook Group or Ravelry page to other SpinOlution spinners who have wheels that will work with those bobbins.

At this time we do not have an old-for-new bobbin exchange policy. Sorry for the inconvenience. 



To upgrade your MACH II to a 16 oz or 32 oz flyer, contact your local dealer. You will need to order a Flyer in that size for the MACH (not an Upgrade, which includes the Head, Flyer, Bobbin, and Orifice bar - but JUST a Flyer which does not include the Head but includes all the other pieces you need to get spinning) - your dealer can order this part for you and have it shipped to your address. 


Drive Wheel FAQ

You may need to remove the main (drive) wheel from your MACH or Echo for troubleshooting or repair. Here is how:

Removing the Drive Wheel

Remove/Replace Bee Drive Wheel

To replace the drive wheel on a Bee, King Bee, or Queen Bee:

  • Loosen the brass screw behind the wheel

  • Open the treadle

  • Push the shaft forward until the wheel is free

  • Several washers will fall out - keep these to put on with the new wheel as well as the wire ring.

  • Put the shaft into the new wheel

  • Add the wire ring to the shaft (next to the new wheel)

  • Then add the washers

  • Slide the wheel down into place

  • Push the shaft into the base

  • Tighten the bass screw to secure

  • Reinstall the Drive Band

Balancing a Wobbily Drive Wheel

The Wheel Wobble on the MACH 2 is due to the wheel shaft moving. Here is how to add a set screw to hold the shaft and keep the wheel from wobbling.

  1. Purchase a wood screw at your local hardware

  2. Use a small drill about 1/8" and drill a pilot hole about 1 1/2 " above the wheel shaft on the back (drill at an angle: that will hit the shaft at the halfway point about 1/2" in)

  3. Screw in a #8 screw about 1 3/4 inch long - this will hit the shaft and lock it from moving. This will remove most of the wheel wobble.


Wood Care & Repair

Sometimes wheels get damaged outside our 1-year warranty - the good news is you can repair any wood cracks with glue and a clamp. Here is how:

  • Using white wood glue, lay a bit at the crack and use your finger to push the glue into the crack, adding more glue until the crack is filled.
  • Clamp on either side of the wood where the crack is
  • Glue will come out after you set the clamp - this is normal
  • Wipe with a damp clean cloth and set for 12 hours

The glue is stronger than the wood, so repairing a crack with glue makes that area the strongest point in the wood - which may prevent future cracking as well.

It is good once a year to thoroughly look over your wheel to make sure you don't see any hairline cracks and to fill those with glue. 

SpinOlution Wheels are Finished in Clear Lacquer. To clean, use furniture polish. 


Treadle FAQ


The knocking is happening because the oval treadle is opening up and hitting the bearings instead of staying closed around the bearings. This could be caused in a change of humidity causing the wood to shrink and the treadle to loosen and open.

Temporary Fix: Put a rubber band around the outside of the treadle to keep it from opening. Just in case you are traveling with your wheel to a new environment (especially a dry climate) it would be a good idea to bring a rubber band with you just in case the wood of your wheel is effected by that new climate. 

Permanent Fix: Add 3 layers of painters tape to the inside of the treadle (so that it is hidden), and gently close the treadle to secure. This should resolve the knocking. 

If you are still having knocking issues, email photos of your wheel (including treadle and any information regarding how you've tried to resolve the issue) to info@spinolution.com and we will help you troubleshoot. 

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  1. Look under the logo and you will find a small hole in the base
  2. Loosen the screw on the base in the back with a small allen wrench (3/32) which will allow the shaft to move freely back and forth.
  3. Push the shaft back
  4. Tighten the screw with the allen wrench
  5. Happy Spinning!

Why did this happen? This most likely happened during shipping and will not be a problem once the shaft is pushed back into place and tightened with the set screw.



Most Likely Scenario: Make sure the left wheel is all the way back (there are washers to keep the wheel out) if there are not enough washers we can ship more to be added for a better alignment. Each wheel has a unique set of washers based on it's alignment in our shop. Sometimes alignment can be jarred during shipping and more washers may be needed to adjust the wheel. 

To resolve, send us a picture of the issue to info@spinolution.com so we can troubleshoot and send the appropriate parts for repair. This is a very simple fix. 


Metric Measurements

  • 4 oz bobbin = 113 grams 
  • 8 oz bobbin = 227 grams
  • 16 oz bobbin = 545 grams 
  • 32 oz bobbin = 907 grams
  • The tube orifice on our 4 oz orifice bar is approx 1.2 cm diameter
  • The tube orifice on our 8, 16, and 32 ounce orifice bars is approx 2.5 cm diameter


  • Weight: 11 kg
  • Height: 81 cm
  • Width: 61 cm
  • Depth: 30.5 cm
  • Wheel Size: 50.8 cm diameter / 3.8 cm inches thick


  • Weight: 6.35 kg
  • Height: 72.4 cm
  • Orifice height: 63.5 cm
  • Width: 49 cm
  • Depth: 30.5 cm


  • Weight: 6.35 kg
  • Open Height: 76 cm; Width: 48 cm; Depth: 33 cm
  • Folded Height: 30.5 cm; Width: 48 cm; Depth: 23 cm
  • Wheel Size: 7.4 cm diameter & 3.8 cm thick


  • Weight: 6 kg
  • Open Height: 76 cm; Width: 48 cm; Depth: 33 cm
  • Folded Height: 30.5 cm; Width: 48 cm; Depth: 23 cm
  • Wheel Size: 7.4 cm diameter & 3.8 cm thick


  • Weight: 5.5 kg
  • Length: 47 cm (at the treadle)
  • Height: 52 cm
  • Width: 40.6 cm (at the flyer front to back in the open position)
  • Width: 19 cm (front to back in the closed / storage position)
  • Orifice Height: 53.3 cm


  • Weight: 6 kg (including battery)
  • Height: 30.5 cm

Import fees and taxes

Customers are responsible for paying any import fees & taxes that their country may add to their purchase upon arrival. SpinOlution will not ship wheels as "gifts" or "samples" - as this removes our ability to insure the packages against damage. Every wheel is insured for the wholesale price, so if it arrives damaged or destroyed, it can be replaced at no cost to the customer. 


Skein Winder FAQ

If you have ordered a package deal or a skein winder, you'll receive a little wooden peg. This peg goes into the first hole of one of the arms of the skein winder to secure the end of your yarn into the hole so it doesn't fall off the skein winder when you begin to wind. It also helps you remember where the beginning of your yarn is. Simply place your yarn tail into the hole, secure with the peg, and begin winding off the bobbin and onto the skein winder using either the 1-yard or 2-yard arms. 


International Shipping Costs & Policies

Yes, we ship our wheels around the world fully insured so if there are any damages those will be fully covered by insurance. International customers are responsible for paying any import duties or fees upon package arrival. 

Most packages are shipped out FedEx or USPS. Our goal is that you to receive your wheel in perfect condition. And we reserve the right to choose the shipping service that does this best.

If a wheel arrives damaged, we will file a claim with the shipping service to process the repair / replacement of your order.