I have a 2005 ltz 400 which is pretty much stock and last time riding it threw the chain twicw on the trails and the last time in my driveway. The last time it jammed around the engine sproket. I was able to get the chain back on and fortunately it did not tear up the sproket but I have no 1st gear or reverse. I have 2nd, 3rd, 4th and 5th still and when taking off out of 2nd it runs and shifts fine. I noticed that while putting it in first or reverse it doesnt engage but when it goes in 2nd i can hear it engage and fell the bike lurch fwd so i know its engaging fine in 2nd thru 5th. I noticed the sheathing on the cable for the reverse switch that runs by the engine sproket was torn exposing the cable but when i turn the rev switch I can watch the cable pull the trans conection like it should. I got the reverse cable on order hoping that it will fix the problem but just wanted some insight to see if anyone else has had a similar problem or other suggestions. If the cable doesnt fix it i think it might be an electrical problem that isnt allowing 1st or reverse to engage. Any advice would be graetly appreciated thanks.