I'm a mechanic by trade. My warrior also has a pull starter and when you pull it it turns the crankshaft to the left. I'm betting there is something wrong with your starter and because of this it is turning the wrong way. You did say that you moved a brush. That could have done it, or you could have found it in the position it was in because of an issue it was having. Do you have access to another starter? If so, hook a battery to it you will see that the starter gear turns to the left, or just put it in your bike and see what happens. You can always pull the idler gears out and turn the flywheel gear to the left by hand (with spark plug out to make it easier ofcourse). It will turn the crank, trust me. If you turn the flywheel gear to the right it will just spin freely and the flywheel will just sit there. If I'm wrong you can throw roost on me if we ever cross paths on a trail.