What to do when the crank is stuck, it is not possible to lower the tool by cranking backwards?
Place the tool in front of you, turn the crank until it is pointing against you. Grab the crank with both hands and push down until it comes lose. Never lift the safety pawl when lower the tool of safety reason.
Image on crank
What to do if the ground is soft and the tool will sink into the ground when used?
Take a piece of wood 40-70 cm long, place it on the ground and place the tool on the wood piece. This will avoid the tool to sink into the ground when used. Since two corners are bent on the foot of the tool, the tool will stay on the wood piece.