How to Change Your Mountain Bike Chain: A Step-by-Step Guide
To change a mountain bike chain, first shift the chain onto the smallest cog. Then, use a chain tool to remove the pin connecting the chain to the bike. Take out the old chain and measure the length of the new chain. If necessary, use a chain tool to adjust the length of the new chain to match the old one. Thread the new chain through the derailleur and onto the chainring, then connect it using a chain pin or quick link. Use a lubricant on the new chain before riding.