Help: mini stairstepper acting up

Hello.

I have had a mini stair-stepper for several months now -- a few days ago, one of the hydraulic cylinders has begun acting up. It is much stiffer than the other one. I cannot use it properly, as the going is quite slow, and I would not have equally-muscles thighs. :p

Nothing seems to be wrong (from what I can see) -- the cylinder feels very "tight". I have been thinking maybe a spot of lubricating oil, or no? Or should I just take it to the shop and see if they can help it?

Not very good at mechanics/physics, I'm afraid, so if anyone's got some DIY tips I could try, I would very much appreciate it.

Thank you; I hope this is the right forum. :)
 
Hydraulics are a tricky thing and generally people shouldnt try to service them themselves. It can get very messy!

I would take it to the shop and get them to look at it, is it under warranty?

Thats definately what I would do, if its under warranty then its not worth risking a void.

Hope that helps
 
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