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I have a Precor EFX 5.21i. The bolt connecting the running rail (silver) to the chassis structure at the bottom has been loose. Tried to tighten, but still loose after 5 min of use. How to fix this?

Model: Precor EFX 5.21i Problem: Bolt that connects Running rail to the chassis is loose, making the running rail loose and wobble while using the machine. Bought new bolts and washer and tightened it, but still becomes loose after 10 minutes of use.

Posted by Jae Shim on


5 Related Answers


Buck Whyte

  • 46 Answers

SOURCE: Door handle loose on Model GSS25WGTA

There is a cover that runs up and down the door. This cover is removed simply by using a thin screw driver and peeling it off. You will find the Bolts under this cover. BE CAREFUL not to over tighten the bolts..

Good Luck

Posted on Mar 07, 2008



  • 74 Answers

SOURCE: How do you easily get a bolt into a rusted thread?

new bolt? or remove the rust on both my soaking in vinegar or a commercial solvent.

Posted on Apr 13, 2009



  • 9 Answers

SOURCE: What is tightening torque of harmonic bal. bolt 1990 Honda Accord

1990 Honda accord
L4 2156cc 2.2ltr engine
crankshaft pulley bolt
apply engine oil to threads (a few drops)
tighten to 159 ft lbs
please rate my answer as I am new

Posted on Aug 29, 2009

Testimonial: "Thanks for your answer. 159ft-lbs seems a bit high. I only say this because 1990 Honda Integra 1.8L is 130ft-lbs. Maybe because of bigger engine."


  • 8 Answers

SOURCE: bolt comes loose and rip cord is yanked from hand

  1. block off the blade and driver assembly with a 2x4 to keep it from moving
  2. remove the flywheel nut (regular hand force should be sufficient)
  3. tap the 3 holes on the flywheel (if they aren't already threaded) using 1/4inch 20national tap set
  4. remove the flywheel using a flywheel puller -- a harmonic balancer puller which matches the tecumseh bolt pattern on the flywheel also works using 3 1/4inch thread (20national, 2inch long) bolts with washers
  5. NOTE: (if the blade was removed/reinstalled, tighten the blade to manufacturer's spec of 60lbs) before installing the new flywheel key
  6. remove the sheared flywheel key
  7. clean up the flywheel (wipe off all the dirt and grease)
  8. install the new flywheel key (part 611004 for toro 20016)
  9. install the flywheel (pull the bail brake handle to get the ball-brake inside the flywheel)
  10. tighten the flywheel nut to manufacturer's spec of 37.5lbs
  11. prime the gas bulb, give it a pull and mow away

Posted on Aug 31, 2009

Testimonial: "excellent solution. easy to follow and precise!"


  • 20 Answers

SOURCE: Hi, I have the Expedition Baby Trend Jogger

visit they can help


Posted on May 05, 2010

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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
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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.
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please follow this steps:
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God bless you


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