Question about Precor EFX 5.21s Elliptical Cross-Trainer

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My precor efx 5.21s elliptical programs don't work

When I turn the unit on the screen starts showing "Precor" but it gets as far as "Pre" and goes to a bunch of dots. When I press enter it's just a bunch of flashing dots.

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: looking for repair manuals and error codes for

Could you please advice about ERROR 29 fo C956i/C966i treadmill.

Posted on Mar 04, 2010

dcramer531
  • 1654 Answers

SOURCE: How do I replace the

You may have to purchase the belt from a Precor dealer in you area, if you don't have one then call Precor directly @ 1-800-347-4404 and they will help you. Most of these part have not hit the secondary market yet and Precor pretty much call the shots on whom the sell parts and support to.
There is a place on line to get some of these, it is. www.treadmilldoctor.com/Products-Services2/precor-treadmill-belt.
The manual can be found at. fitness.manualsonline.com/ex/thread/view/idThread/2141832
This place has manuals and user manulas along with support and some partswww.shopwiki.com/Precor+EFX+5.171 I believe this unit has a 10 yr warranty with it and the part in question may be covered by them. There is also a 1 year part warrant for other parts, I just don't know what parts they are covering for the 10 yr.

Posted on Dec 26, 2010

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1 Answer

Can I adjust the stride length?


Precor EFX 546 Version 1 Elliptical Trainer (Refurbished)

www.amazon.com > ... > Elliptical Trainers

Amazon.com, Inc.
Rating: 4.3 - ‎9 reviews
Working out on an elliptical can burn as many calories as working out on a treadmill. ...allowing you to go forward and backward, as well as adjust stride length to target ...The Precor EFX 546 allows you to stride smoothly while holding the ...

EFX® 546i Elliptical Fitness Crosstrainer™ ' Precor

www.precor.com/en-us/.../efx-546i-elliptical-fitness-crosstrainer-33
With the unique Precor CrossRamp® technology, users can alter the path of the EFX®546i between 13 and 40 degrees in both forward and reverse stride motions, cross ...Excellent stability and freedom of movement for users of all sizes.

FAQ - Precor


Dec 28, 2015 | Precor 546 Elliptical

1 Answer

I want to replace the battery


Replacement Parts for Fitness Exercise Equipment at SPORTSMITH

Warning Notice for Battery Installation of certain Precor Ellipticals This notice provides details about the battery replacement procedure that should be considered by anyone performing this repair. Following is the warning about the battery installation for certain models of the Precor ellipticals.

Precor Elliptical Models Affected:

  • EFX C524 with serial#s beginning I7, K7, LH, SW, SX
  • EFX C546 with serial#s beginning NF,SZ, IK, IL, IU
  • EFX C546I with serial#s beginning X8, XG, Z2
  • EFX C556 with serial#s beginning NG, SY
When replacing the battery on your Precor elliptical it is important to make sure that the battery terminals are not allowed to make contact with the metal surface of the battery bracket. **Damage to the battery will occur**.
Electrical tape can be wrapped around the battery terminals to prevent them from making contact with the metal surface of the battery bracket.
Battery replacement on the EFX C524, EFX C546, EFX C546i and EFX C556 instructs you to remove the (4) screws that fasten the battery bracket to the frame. This allows you to turn the lower PCA and battery assembly away from the frame so you can slide the battery out of the battery bracket. It may be necessary to remove the nut that fastens the front retaining bracket or "L" bracket in order to slide the battery out of the battery bracket.


Warning Notice for Battery Installation on Precor EFX Ellipticals

Feb 11, 2014 | Precor EFX 546i Elliptical Version 4

1 Answer

Replacing battery


Warning Notice for Battery Installation of certain Precor Ellipticals This notice provides details about the battery replacement procedure that should be considered by anyone performing this repair. Following is the warning about the battery installation for certain models of the Precor ellipticals.

Precor Elliptical Models Affected:

  • EFX C524 with serial#s beginning I7, K7, LH, SW, SX
  • EFX C546 with serial#s beginning NF,SZ, IK, IL, IU
  • EFX C546I with serial#s beginning X8, XG, Z2
  • EFX C556 with serial#s beginning NG, SY
When replacing the battery on your Precor elliptical it is important to make sure that the battery terminals are not allowed to make contact with the metal surface of the battery bracket. **Damage to the battery will occur**.
Electrical tape can be wrapped around the battery terminals to prevent them from making contact with the metal surface of the battery bracket.
Battery replacement on the EFX C524, EFX C546, EFX C546i and EFX C556 instructs you to remove the (4) screws that fasten the battery bracket to the frame. This allows you to turn the lower PCA and battery assembly away from the frame so you can slide the battery out of the battery bracket. It may be necessary to remove the nut that fastens the front retaining bracket or "L" bracket in order to slide the battery out of the battery bracket.
Warning Notice for Battery Installation on Precor EFX Ellipticals

Feb 07, 2014 | Precor EFX 546i Elliptical Version 4

1 Answer

How do I replace the battery on efx 546i


Replacement Parts for Fitness Exercise Equipment at SPORTSMITH

Warning Notice for Battery Installation of certain Precor Ellipticals This notice provides details about the battery replacement procedure that should be considered by anyone performing this repair. Following is the warning about the battery installation for certain models of the Precor ellipticals.

Precor Elliptical Models Affected:

  • EFX C524 with serial#s beginning I7, K7, LH, SW, SX
  • EFX C546 with serial#s beginning NF,SZ, IK, IL, IU
  • EFX C546I with serial#s beginning X8, XG, Z2
  • EFX C556 with serial#s beginning NG, SY
When replacing the battery on your Precor elliptical it is important to make sure that the battery terminals are not allowed to make contact with the metal surface of the battery bracket. **Damage to the battery will occur**.
Electrical tape can be wrapped around the battery terminals to prevent them from making contact with the metal surface of the battery bracket.
Battery replacement on the EFX C524, EFX C546, EFX C546i and EFX C556 instructs you to remove the (4) screws that fasten the battery bracket to the frame. This allows you to turn the lower PCA and battery assembly away from the frame so you can slide the battery out of the battery bracket. It may be necessary to remove the nut that fastens the front retaining bracket or "L" bracket in order to slide the battery out of the battery bracket.
Warning Notice for Battery Installation on Precor EFX Ellipticals

Jan 01, 2014 | Precor EFX 546i Elliptical Version 4

1 Answer

How do i change the battery on a precor efx 5461


Replacement Parts for Fitness Exercise Equipment at SPORTSMITH Warning Notice for Battery Installation of certain Precor Ellipticals This notice provides details about the battery replacement procedure that should be considered by anyone performing this repair. Following is the warning about the battery installation for certain models of the Precor ellipticals.

Precor Elliptical Models Affected:

  • EFX C524 with serial#s beginning I7, K7, LH, SW, SX
  • EFX C546 with serial#s beginning NF,SZ, IK, IL, IU
  • EFX C546I with serial#s beginning X8, XG, Z2
  • EFX C556 with serial#s beginning NG, SY
When replacing the battery on your Precor elliptical it is important to make sure that the battery terminals are not allowed to make contact with the metal surface of the battery bracket. **Damage to the battery will occur**.
Electrical tape can be wrapped around the battery terminals to prevent them from making contact with the metal surface of the battery bracket.
Battery replacement on the EFX C524, EFX C546, EFX C546i and EFX C556 instructs you to remove the (4) screws that fasten the battery bracket to the frame. This allows you to turn the lower PCA and battery assembly away from the frame so you can slide the battery out of the battery bracket. It may be necessary to remove the nut that fastens the front retaining bracket or "L" bracket in order to slide the battery out of the battery bracket.
Warning Notice for Battery Installation on Precor EFX Ellipticals

Dec 25, 2013 | Precor EFX 546i Elliptical Version 4

1 Answer

Precor efx 556


Here you will find parts and other information for the Precor EFX 556.

Repair Parts for Precor EFX 556 Ellipticals SPORTSMITH net

Jan 07, 2012 | Precor EFX 546i Elliptical Version 4

1 Answer

My drive belt for my Precor EFX 5.33 broke. I have a replacement belt and would like detailed instructions on how to replace it.


Use this link and have your serial number ready. On the left of the screen, you will have the option to click on your serial number range. You should see a tab in the middle of the screen that shows manuals. Click on the service manual and you will have the information you're looking for.
Repair Parts for Precor 5 33 Ellipticals Consumer SPORTSMITH net

Feb 27, 2011 | Precor EFX 546i Elliptical Version 4

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