How to adjust gears on Shimano Altus||

Adjusting gears on a bicycle involves fine-tuning the derailleur and cable tension. Here's a basic guide:Inspect the gears: Ensure the chain is clean and properly lubricated. Check for any visible damage to the gears and chain.Shift to the smallest chainring and cog: This will create slack in the cable, making adjustments easier.Adjust cable tension: Use the barrel adjuster on the derailleur or shifters to fine-tune cable tension. Clockwise turns typically tighten the cable, while counterclockwise turns loosen it.Check shifting: Shift through all gears to ensure smooth transitions. If the chain hesitates or makes noise while shifting, continue adjusting cable tension until it shifts smoothly.Limit screws: If the chain falls off the gears or struggles to shift onto them, adjust the limit screws on the derailleur. The L screw adjusts the low gear, and the H screw adjusts the high gear.Fine-tune: Make small adjustments as needed until the gears shift smoothly and the chain stays on the gears without rubbing.Test ride: Take the bike for a short ride to ensure the adjustments hold up under normal riding conditions.
If you're not comfortable with these adjustments, it's always a good idea to seek assistance from a professional bike mechanic.