Polaris pressure side cleaner wont move

ok I tried to move wheels and they are free but I saw a large crack and hole in the bottom. Do I have to fix them before the wheels turn properly? I plan to fix the hole, just wondered if that could be the main problem to make the wheels turn.
 
Its just a sweep that wheels will not move. Im having it checked, as I got the sweep kinda second hand if it cannot be fixed I will buy new. Thanks to everyone with the advice
 
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