- Oils and greases machine and checks ropes.
- Watches control panel for warning lights and indications of wind speed and direction and carrying capacity of crane.
- Lifts load or cage, or hauls object into required position and lowers or positions for ground workers to detach, unload or load.
- Manipulates levers, switches and pedals to rotate jibs into position and turns winding drum to raise or lower hook, bucket or other holding equipment.
- Starts crane or engine motor and checks that cables run freely and that brakes and drum(s) are working.
- Gives signals for movement of cage carrying workers/equipment.