What to do if the skis slip
If the leg exerciser part of your ski machine slips or skips during use, there are a few areas to check out:
Check the drive rollers. These should spin freely in the frontward direction and catch the shaft in the rearward direction. Classic failure is that only one ski slips or skips.
Make sure the tension strap is not worn. If both skis slip or skip or if the tension strap spring chatters, it is a normal sign that the strap needs to be flipped or replaced.
Check for rust on the flywheel. If the channel is rusted that the tension strap rests upon, you will not be able to get the machine to work properly. Resurface the flywheel with emery cloth and clean with mineral spirits.
Check the underside of the skis. If you have a rubber build-up, clean the skis and then re-oil the wood so it doesn't dry out and split.
The skis could be warped. Lay the skis on a level surface and see if the ski is laying flat on the surface. If not the ski is warped and needs to be replaced.
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