Per Roger, "The problem is that the tube is actually there to correct the prop rotation. If the prop spins backwards the magnet/ prop assembly flies down the tube until it breaks contact with the electromagnetic field, in falling back in it spins the right way, like a falling maple seed and syncs up with the magnet correctly. The tube is to keep the magnet from flying out of socket or hanging up on the intake screen. Contrary to popular belief the 6025 and 6045 use the same front cover."
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