How to fix the shifting gears on my bicycle. Rear derailleur adjustment

Hello cyclist. You have brought a bike to our repair shop with a broken rear derailleur that needs to be replaced. We have a lot of work to do. I'll show you step by step how to replace the rear derailleur with a new one, replace the cable and its housing, and adjust it. We'll also remove the chain and I'll show you a life hack to improve the quality of shifting on your bike. Enjoy the video!

00:00 How to fix the shifting gears on my bicycle.
00:20 Problems with shifting gears on my bike.
00:46 How to remove the chain from the bicycle.
01:26 How to disconnect the rear derailleur from the bicycle.
02:00 How to align the rear derailleur holder.
03:00 Fitting a rear derailleur to a bicycle.
03:20 How to change the cable and housing on your bicycle.
04:17 To make the cable easier to pass through, flatten the hole in the housing at the bite-off point.
04:55 Life hack to improve the shifting accuracy of the rear derailleur.
07:01 How to determine the length of the cable housing for your bike.
08:32 How to connect the cable to the rear derailleur correctly.
09:00 How to easily put a chain with a lock on your bike.
10:57 How to adjust the rear derailleur of your bike.
13:33 How to lubricate the chain on a bicycle.