Check all the safety buffers. The safety buffers must not be porous, pinched, bent or otherwise damaged.

   Check the material of the safety buffers all the way round. The plastic must not be cracked anywhere on the surface.

   Press the safety buffers with your finger. The safety buffers must be able to be pressed in slightly and be formable.

   If any of the safety buffers is damaged in any way whatsoever, replace all the safety buffers on the crane.

   If any of the safety puffers cannot be pressed in, replace all the safety buffers on the crane.