I'm assuming you have set #4823 fire boat & trailer. If you remove the cable winch from the trailer, you will then need to give a quick jerk on the turn handle drum part number 30226420 to release it from the 30226410 cable drum. Once the handle is slid out of the drum, you can remove the cable drum from cable hoist mounting bracket & investigate the cause of the jambed cable/string to correct the malfunction.