vs800

Hey Everyone, So I recently plugged my bike up to a charger for the winter and when went to put it back into the bike I believe I reversed the polarity. Due to this I ended up blowing the main fuse. I replaced the fuse, but i think I messed something up on the bike. When i plug the battery...

I have a strange problem with my Suzuki Intruder VS800. The bike works fine except for Fourth gear. Whenever I change into fourth the engine dies. Electrics stay on but it is as if the side-stand has been deployed. I have disconnected the side-stand but the problem persists. PLEASE HELP!!!