Step 1: Changing rear sprockets on WR250R
Step 3: Changing rear sprockets on WR250R
First you loosen the lock nut, which is a twelve millimeter on this particular bike. You loosen this up and the same thing on the other side. Then you'll get the actual adjustment screw or bolt, and if it's too loose then you need to go backwards with the bolt. If it's too tight, then you need to go forward with the bolt.