Here are 10 easy steps to walk you through how to replace motorcycle fork seals. Start by getting the fork leg off the bike--did you remember to crack the fork cap while the lower triple clamp bolts were still tight?--and giving it a thorough bath with a parts washer or contact cleaner. With the fork cap still in place, take your hex driver and insert it into the damping-cartridge hole; give it three or four good whacks with a hammer (1) to help unseat any thread-locking compound. Loosen but don't remove the bolt just yet. Go to the other end of the leg and remove the fork cap (2). Drain the fork oil through the top, and take careful note of the orientation of the spring, washers and spacers. Remove the fork cap from the damping rod, then remove the spring, spacers and washers and set them aside. Next, remove the cartridge bolt (3), make sure you account for the brass washer under its head.