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Question About ProForm Treadmill J4i
I jus purchased a j4i at a garage sale and noticed...

I jus purchased a j4i at a garage sale and noticed that it makes a loud humming noise when it is being used. The person I bought it off of says that periodically it needs to be lubricated, I cannot find anything out in the manual about where and how. So my question is .. Does it in fact need to be lubricated and if it does how do I do that?

Asked by Terri on 05/03/2014 0  Answer

ManualsOnline posted an answer 10 years, 6 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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