Cycling 101: How To Fix A Bike Chain

Cycling enthusiasts know the physical and environmental benefits of riding, but even the most seasoned cyclists encounter mechanical issues from time to time. One of the most common problems is a slipped or broken bike chain. Whether you're on a leisurely ride through the countryside or commuting to work, knowing how to fix a bike chain is an essential skill. 

In this guide, we will take you through the steps to get your bike back on track.

Understanding Your Bike Chain

Before diving into the repair process, it's important to understand the basic components of your bike chain. The chain is a crucial part of your bike’s drivetrain, transferring power from the pedals to the wheels. It is made up of a series of links, each consisting of inner and outer plates, pins, and rollers. Over time, these parts can wear out, causing the chain to slip off the gears or even break.

Diagnosing the Problem

The first step in fixing a bike chain is diagnosing the issue. A chain can come off for several reasons:

• Misalignment of the gears
• Wear and tear
• Debris caught in the chain
• Sudden force or impact

If your chain has simply slipped off the gears, the fix is relatively straightforward. However, if the chain is broken or damaged, it will require a more involved repair.

Tools You'll Need

To fix a bike chain, you will need a few basic tools:

• Chain tool (for breaking and rejoining the chain)
• Chain lubricant
• Clean rag or cloth
• Gloves (optional but recommended)

Stop safely: if your chain slips off while you are riding, stop in a safe place. Shift to the smallest front chainring and the smallest rear cog to release tension on the chain.

Re-seat the chain: with the chain loose, guide it back onto the chainring at the front and then onto the rear cog. Rotate the pedals slowly to ensure the chain is properly seated on the gears.

Check alignment: make sure the chain is properly aligned with the gears. If it’s not, shift through the gears slowly while pedalling to ensure everything is running smoothly.

Repairing a Broken Chain

Remove the broken link: if your chain is broken, you will need to remove the damaged link. Use the chain tool to push the pin out of the link, but be careful not to push it all the way out. You want to leave it partially in so you can easily reattach the chain.

Reconnect the chain: once the damaged link is removed, reattach the chain by aligning the ends and pushing the pin back in using the chain tool. Ensure the pin is fully seated but not too tight, allowing the link to pivot freely.

Check the chain length: sometimes, removing a link can make the chain too short. Ensure the chain still fits around the largest chainring and the largest rear cog without being too tight. If necessary, add a new link to the chain.

Maintenance Tips

Regular maintenance can prevent many chain issues and prolong the life of your bike chain:

Clean regularly: wipe down your chain with a clean rag to remove dirt and debris.

Lubricate: apply a suitable chain lubricant to keep the chain running smoothly and reduce wear.

Inspect for wear: regularly check your chain for signs of wear and stretch. A worn chain can damage your bike’s gears, leading to more costly repairs.

Learn this basic skill to save money and stay on the road

Knowing how to fix a bike chain is a valuable skill for any cyclist. Whether dealing with a simple slip or a more serious break, being prepared can save you time, money and frustration. 

By following the steps outlined in this guide and maintaining your bike chain regularly, you can ensure a smoother, more reliable cycling experience. So, next time your chain gives you trouble, you’ll be ready to handle it like a pro. 

Check out our blog section to learn more about cycling and how to get more out of your hobby.