Bobcat 325 75-21 Error Code
75-21 Error Code
Left Joystick Y-axis Out Of Range High is the main cause of 75-21 error.75-21 code needs proper lubrication of your transmission's moving parts, it's important to always drive with the right amount of clean fluid. It's good practice to periodically scan over the ground where your truck has been parked and check for signs of fluid leaks.

Tip For 325 Model
Operate as slow as possible and avoid sudden changes
in lever direction.
Avoid travelling over objects such as rocks, trees,
stumps, etc.
Stop the machine before moving the upper equipment
controls. Never allow the blade to strike a solid object.
Damage to the blade or hydraulic cylinder can result.