STEP 15 Using a chain measuring tool, check the chain sag. Consult your owner’s manual to determine the proper chain sag for your bike. On a Honda, the proper sag is 35mm from the master link center pin with up and down play from directly behind the swingarm chain slider. When tightening the rear axle, place a rag between the chain and the rear sprocket and spin the rear wheel back- ward to apply tension to the chain. This ensures that the chain blocks are pulled tightly forward against the chain adjusters. Tighten the axle. Remove the rag and tighten the chain adjuster nuts. ;
STEP 10 Apply red Loctite to the threads of the countershaft sprocket bolt. Hand-tighten the bolt, but don’t tighten it completely until the new chain has been installed on the drive system. If your bike uses a circlip, install it, making sure that it is completely seated into the output shaft groove.
STEP 13 Be aware that the new chain will be tight during installation. This is because the old chain stretched over time. It will be necessary to adjust the chain adjuster blocks to accommodate the new chain. Once the chain is completely wrapped around the sprockets and through the chainguide, install the master link, link plate and link clip. Always install the master link clip so that the open end faces rearward.
STEP 12 Take your new chain out of the box and extend it on a flat surface next to the outstretched old chain. Make sure that the number of links are the same. If not, remove the proper number of links with a chain breaker. It is imperative that you do not remove too many links. Resist the urge to use two master links to make up for any length discrepancy. Measure twice; cut once. Before installing the new chain, inspect the chainguide, chain rollers and chain slider. If these items are worn, replace them. Otherwise, the new chain might wear through the plastic and into the swingarm or chainguide cage.
STEP 11 Carefully install the rear wheel after cleaning the rear axle. Be mindful of the axle blocks and washer. Finger tighten the rear axle nut. Do not tighten it completely! STEP 14 Tighten the countershaft sprocket bolt. Torque the bolt to the recommended setting found in your owner’s manual. Once the bolt is tightened, install the countershaft sprocket engine guard.