I am new to bikes and I have a question about my new KLX 250s. I bought a new 13 tooth sprocket to put on the front. What is the trick to taking off the old one. There is a large bolt and from just looking I can't tell if it is a right or left handed nut....also should it turn right off or do I need to to something special????

rust

 

From my experiences with sprockets there are threaded normally. so turn to the left to get it off. It will take alot of force, use a impact wrench if u have access to one. In the how to section there is a sprocket change for my bike, its different than yours but the process should be the same.