To change the chain on a Yamaha FZS motorcycle, you'll need a few tools and follow these general steps:
Gather the necessary tools: You will need a socket set, a wrench, a chain breaker tool, a rivet-type master link or a clip-type master link (depending on your chain type), and a rear wheel stand or a paddock stand.
Elevate the rear wheel: Use a rear wheel stand or paddock stand to elevate the rear wheel of your Yamaha FZS off the ground. This will allow you to rotate the wheel freely and make the chain replacement process easier.
Remove the old chain: Loosen the rear wheel axle nut using a socket or wrench and slide the axle out. This will give you enough slack to remove the old chain from the sprockets. Pay attention to the chain routing as you remove it, and note any master links that need to be disassembled.
Size the new chain: If you purchased a new chain that is longer than necessary, you will need to adjust its length. Lay the new chain alongside the old one and compare their lengths. If the new chain is longer, you will need to remove the excess links. You can do this using a chain breaker tool.
Install the new chain: Begin by placing the new chain on the rear sprocket, making sure it is properly seated. Then, carefully thread the chain through the front sprocket, keeping the proper alignment. Ensure that the chain is properly tensioned. You can refer to your motorcycle's manual for the correct tension specifications.
Connect the master link: Depending on the type of master link you have (rivet-type or clip-type), follow the appropriate procedure. For a rivet-type link, use a chain rivet tool to press the link's pins into place. For a clip-type link, carefully install the clip onto the master link pins, ensuring it is properly secured.
Adjust chain tension: With the new chain installed, adjust the chain tension according to your motorcycle's specifications. There should be a recommended amount of slack specified in your motorcycle's manual. Adjust the rear wheel position if necessary to achieve the correct tension.
Reinstall the rear wheel: Slide the rear wheel axle back into position and tighten the axle nut securely. Double-check that the wheel is properly aligned and spins freely.
Test and adjust: Take your Yamaha FZS for a short test ride to ensure the chain is functioning smoothly. If needed, make further adjustments to the chain tension.
It's important to note that the above steps provide a general guideline, and the specific process may vary slightly depending on your Yamaha FZS model and any aftermarket modifications. Always consult your motorcycle's manual for detailed instructions and specifications regarding chain replacement. If you are unsure or uncomfortable performing the task yourself, it is recommended to seek assistance from a qualified mechanic or motorcycle technician.