On Astro Knights Island, you need a power source for the saucer Excalibur. Since you have used your manure, you need another power source. Although the green fuel rod is broken, the alien invader in the castle dungeon probably uses the same type of power. Go into the Dungeon by way of Mordred's underground lab.
(see related question)
There's only enough power to reach X-52 Y-56, the robot moon, so enter those coordinates and press launch. When you reach the Pewter Moon, you will exchange the saucer and build your own new spaceship.
You get the alien "fuel rod" from the robot invader in the dungeon, and use it to power the saucer Excalibur, so you can go to space. (see related question)
It does nothing....HEY can you finish for me super power island and astro knights pls
There is no such power. You can fly on the hovercraft into the mud swamp, and in space aboard the Astro Zone ships. (see related questions)
The hovercraft runs on manure.
You can't. That only happens at the end of the game.
It goes to the mud swamp, which is the only place that you can use it.
it is actually the "rocket" and you need the manure to power it when you power it it will fly out and will be in the swamp
None of the computers on Arturus work because there's no power for them.
You can't, although it will be back on once you finish the game and save the Princess.
You have to power it up with manure which you have to get from the farmer near the secret hatch to Mordred's Hideout
You use it to power the hover board (hovercraft) in the attic of the windmill. (see related question)
In the field between the castle and the mill. You only get one bag, and it is used to power the hovercraft.