One of the most important items that need to be maintained the KLR250, or any motorcycle for that matter, is the drive chain. Failure to clean, lubricate, and adjust the chain at regular intervals can result in premature wear of the chain and sprockets. A worn or misadjusted drive chain can break or slip off the sprockets causing the rear wheel to lock up sending the bike out of control. In this article we're going to look at the basics of adjusting the chain of your KLR250. To the left is a diagram that shows the chain and sprockets. The part in the middle is the swingarm, which is what the rear wheel is attached to. On the front part of the swingarm there is a plastic chain guard that is held on with one bolt. That bolt is where you'll check for slack in the chain which will tell you whether it is adjusted properly or not. Items Needed: -Ft/lb torque wrench -New cotter pin -Basic hand tools According to the Kawasaki KLR250 owners manual the correct way to check for proper cha...