Remove the Leader Hose from the PoolCleaner. Lay the hose out straight.
If you have to replace a vane you will note that one end of the replacement vane is larger that the other. These vanes are designed to fit both older and newer PoolCleaner models. If you have an older PoolCleaner, you will slide the smaller round end of the vane into the hub. If you have a newer PoolCleaner, slide the larger oval end of the vane into the hub. If you mistakenly slide the smaller end into the hub of a newer PoolCleaner, it may fall out in operation.