get the crab from the living quarters
you put it in the water
The robot crab is full of cold water, which you can use to cool down the Hot Hatch at the Hub on Steamworks Island. However, you will need Sprocket the Robot to help you. Find the robot at the Living Quarters to the far left of the main part of the island. Jump on him to get him and Sully's door key. Using the Steam Generator (trash bin at the Cantina), open Sully's door and find Sprocket. Ringing the bell on the counter will awaken him. Take him and the crab to the Hot Hatch at the Hub. Use the robot crab and Sprocket will drop it on the Hatch, cooling it down so you can go underground. That is the only use for the crab.
The robot crab is full of cold water, which you can use to cool down the Hot Hatch at the Hub on Steamworks Island. However, you will need Sprocket the Robot to help you. Find the robot at the Living Quarters to the far left of the main part of the island. Jump on him to get him and Sully's door key. Using the Steam Generator (trash bin at the Cantina), open Sully's door and find Sprocket. Ringing the bell on the counter will awaken him. Take him and the crab to the Hot Hatch at the Hub. Use the robot crab and Sprocket will drop it on the Hatch, cooling it down so you can go underground. That is the only use for the crab.
The robot crab is full of cold water, which you can use to cool down the Hot Hatch at the Hub on Steamworks Island. However, you will need Sprocket the Robot to help you. Find the robot at the Living Quarters to the far left of the main part of the island. Jump on him to get him and Sully's door key. Using the Steam Generator (trash bin at the Cantina), open Sully's door and find Sprocket. Ringing the bell on the counter will awaken him. Take him and the crab to the Hot Hatch at the Hub. Use the robot crab and Sprocket will drop it on the Hatch, cooling it down so you can go underground. That is the only use for the crab
you don't. you just jump over it.
you have to find the robot crab filled with water (near the door on top of sullys saloon) and use sprocket (in zacks garage next to sullys saloon) to drop it on the hatch and cool it down
You have to go down the hot hatch and cool it off with the crab water. You use the rope to capture the evil plant and go down. Then you click on the maze and figure out how to get the ball in the hole
you dump the cold water by going into the backpack and clicking use while you are by the hatch.
On Poptropica, Steamworks island you are using the robot crab to cool down the bell. Once you have cooled the bell down you can touch it without being burned.
you ask sprocket to help.
You have to descend into the underground through the Hot Hatch. You will need the old vine from the roof of the Storeroom (far left past the living quarters), and the Robot Crab, and Sprocket the robot (inside Sully's Paraphernalia). Have Sprocket drop the crab on the hatch to cool it down, then enter the tunnels. When attacked by the monster plant, use the old vine to pull down a steam pipe on it. Solve the three puzzles at the bottom left to restore power to the elevator. (see related question)
Easy! Duck like you normally would! Point your arrow down.