My proform 520 treadmill slows down and then stops running after about five minutes of use. if you step off it it runs and then if you tread on the belt it stops and the belt is constantly slipping even after adjusting tighter. Any ideas?. we adjust the belt before each use.

debbie HH, January 2008

My proform 520 treadmill belt is skipping badly? Can you help. I just bought it two years ago.

renae, January 2009

my belt slips on my 520 proform treadmill after im on it for 3 to 5 minutes. any suggestions ?

Kristi, May 2008

I just had my Proform repaired. My problem was one of the plastic connections on the end of the treadmill was cracked. If you are using the treadmill it would be the two plastic pieces behind you. He put some type of screw on the left one so I didn't have to replace it. Eventually I will. The belt was leaning toward the left before I had it repaired. The repairman said after five years you should change the belt. I didn't need to do that yet. If you live in the L.A. area the repair person is Eric. The number is 310 489-0200. Cheaper than a company. I'm glad mine works because I like using it.

Debbie, January 2008