I have a Lx 665 skidsteer. The right side forward lever skips, or loses power.

[Leonard8888]

I have a Lx 665 skidsteer that the right hand side forward and reverse lever is skipping.Only when moving forward?

 

[mrbb]

could your sprockets on the chain case be loose or worn out? causing the chain to slip on sprockets?

should be a panel that you can open to view sprockets and or can jacks skid steer up on that side and check tension on things by checking slop in wheel movement

 

[Shanmar]

I like mrbb's suggestion. If not there, there is a gearbox between the chains and hydro motor. Could be something going on in there too.