How to Shorten a Motorcycle Chain
Shortening a motorcycle chain is a common maintenance task that helps ensure your motorcycle’s sprockets and engine work efficiently. This process is generally done when you’ve purchased a new chain that’s too long for your bike or when you’ve removed a damaged link and need to readjust the length of the chain. Below is a step-by-step guide to help you shorten your motorcycle chain safely and accurately.
Tools and Materials Needed
- Chain breaker tool or chain press tool
- Grinder or file if needed (for peening pins)
- Ruler or tape measure
- Marksman tool, like a marker or chalk
- Replacement chain link if necessary
- Work gloves and safety glasses
- Clean rag
- Motorcycle stand or way to securely support the motorcycle
Step 1: Measure the Chain
First, determine the length your chain needs to be. Consult your motorcycle’s manual for the correct chain length and number of links. Use your ruler or tape measure to count the number of links on your current chain. Mark the link where you need to shorten the chain with your marker or chalk.
Step 2: Remove the Motorcycle Chain
Depending on your motorcycle’s setup, you may need to remove the chain before you can work on it. This may involve removing the master link or using the chain breaker tool to push out one of the pins. Ensure the motorcycle is securely supported on a stand and that the chain is clean and free of dirt to clearly see the links and pins.
Step 3: Shorten the Chain
Once you’ve identified which link needs to be removed, place the chain within the jaws of the chain breaker tool, aligning its pin with the pin of the chain you’re removing. Turn the handle of the tool to press the pin out. Note that you might need to use a grinder or file on some chains with peened pins before you can use the chain breaker tool on them.
Step 4: Reattach the Chain
After removing the necessary links, you will need to reattach the ends of the chain. If your chain has a master link, reattach it according to the manufacturer’s instructions. Ensure that the master link clip is facing the correct direction, which is typically with the closed end facing the direction of chain rotation.
Step 5: Adjust Chain Tension
Reinstall the chain onto the motorcycle. Adjust the chain tension according to the specifications in your motorcycle manual. This usually involves adjusting the position of the rear wheel until the chain has the proper amount of slack.
Step 6: Test the Motorcycle
Once the chain is shortened and adjusted, it’s crucial to test your motorcycle. Spin the wheel manually to ensure the chain moves smoothly around the sprockets. Start the motorcycle and put it through a full range of motion while observing the chain. You should ensure there are no tight spots or binding.
Safety Precautions
- Always wear gloves and safety glasses when cutting the chain to protect against metal filings and pinched fingers.
- Ensure your work area is clean and well-lit.
- Never use a damaged or improperly installed master link.
- Regularly inspect the chain for wear after shortening and during routine maintenance.
Shortening a motorcycle chain requires precision and careful work. If you’re not confident in completing this task, it is recommended to seek the help of a professional mechanic. A correctly shortened and installed motorcycle chain will help maintain the performance and safety of your motorcycle.