It should lift higher than that.
Do the arms lift higher when the mower is not attached? If hey lift higher without the mower attached then there may be an internal leak.
Is it in draft control mode or position control mode? The small lever near the base of the main 3 point lift control handle should be in the upper position (pointing straight up) to be in position control mode. If it is in position control mode and still doesn't lift any higher then something inside may be worn or out of adjustment.
Do the arms lift higher when the mower is not attached? If hey lift higher without the mower attached then there may be an internal leak.
Is it in draft control mode or position control mode? The small lever near the base of the main 3 point lift control handle should be in the upper position (pointing straight up) to be in position control mode. If it is in position control mode and still doesn't lift any higher then something inside may be worn or out of adjustment.