A lift arm assembly comprising: a lift arm that is pivotally securable to a first end to a main frame of a power machine; an implement carrier that is pivotally secured to a second end of the lift arm; a lift cylinder that is pivotally securable to a first end to the lift arm and pivotally securable to a second end to the main frame, so that extending or retracting the lift cylinder raises or lowers the lift arm; a leveling link that is pivotally securable to a first end to the lift arm; a tilt cylinder that is pivotally securable to a first end to the implement carrier and pivotally securable to a second end to the leveling link, so that operation of the tilt cylinder causes the implement carrier to pivot relative to the lift arm; and an isolated hydraulic circuit that includes: a follower cylinder that is pivotally securable to a first end to the lift arm and pivotally securable to a second end to the main frame, so that the follower cylinder is mechanically synchronized with the lift cylinder; a leveling cylinder that is pivotally securable to a first end to the lift arm and pivotally securable to a second end to the leveling link; a first conduit providing hydraulic flow between a base end of the follower cylinder and a base end of the leveling cylinder; and a second conduit providing hydraulic flow between a rod end of the follower cylinder and a rod end of the leveling cylinder, wherein movement of the follower and leveling cylinders (352, 374) is hydraulically synchronized by flow through the first and second conduits (308A, 308B). a lift arm that is pivotally securable to a first end to a main frame of a power machine; an implement carrier that is pivotally secured to a second end of the lift arm; a lift cylinder that is pivotally securable to a first end to the lift arm and pivotally securable to a second end to the main frame, so that extending or retracting the lift cylinder raises or lowers the lift arm; a leveling link that is pivotally securable to a first end to the lift arm; a tilt cylinder that is pivotally securable to a first end to the implement carrier and pivotally securable to a second end to the leveling link, so that operation of the tilt cylinder causes the implement carrier to pivot relative to the lift arm; and an isolated hydraulic circuit that includes: a follower cylinder that is pivotally securable to a first end to the lift arm and pivotally securable to a second end to the main frame, so that the follower cylinder is mechanically synchronized with the lift cylinder; a leveling cylinder that is pivotally securable to a first end to the lift arm and pivotally securable to a second end to the leveling link; a first conduit providing hydraulic flow between a base end of the follower cylinder and a base end of the leveling cylinder; and a second conduit providing hydraulic flow between a rod end of the follower cylinder and a rod end of the leveling cylinder, wherein movement of the follower and leveling cylinders (352, 374) is hydraulically synchronized by flow through the first and second conduits (308A, 308B). a follower cylinder that is pivotally securable to a first end to the lift arm and pivotally securable to a second end to the main frame, so that the follower cylinder is mechanically synchronized with the lift cylinder; a leveling cylinder that is pivotally securable to a first end to the lift arm and pivotally securable to a second end to the leveling link; a first conduit providing hydraulic flow between a base end of the follower cylinder and a base end of the leveling cylinder; and a second conduit providing hydraulic flow between a rod end of the follower cylinder and a rod end of the leveling cylinder, wherein movement of the follower and leveling cylinders (352, 374) is hydraulically synchronized by flow through the first and second conduits (308A, 308B).