My 2008 46in Poulan Pro Riding Lawn Mower with a Briggs and Stratton engine wouldn't turn over last spring, so I went in a different direction by buying an EGO Mover, couldn't be happier. Last spring I moved the Poulan out of the small shed by turning a front tire to get it to roll. Tried that this spring to get it out and it won't budge. It's in neutral. The brake is disengaged. Is it because the battery is dead? There is no shaft/key to disengage the transmission. Any hints/help would be greatly appreciated.