Shimano SL-MT500 seat post dropper lever, left, clamp

WARNING
For assistance with installation, adjustment, and replacement of products not found in the user's manual, please consult the place of purchase or a distributor. A dealer's manual intended for professional and experienced bicycle mechanics is available on our website (https://si.shimano.com).
For safety, be sure to read this "user's manual" thoroughly before use, follow it for correct use, and save it so that you can refer back to it at any time.
The following directions must be always followed in order to prevent personal injury, physical damage to equipment or damage to the surroundings. The directions are classified according to the degree of danger or damage which may occur if the product is used incorrectly.
DANGER - Failure to follow the directions will result in death or serious injury.
WARNING - Failure to follow the directions could result in death or serious injury.
CAUTION - Failure to follow the directions could cause personal injury, or physical damage to equipment and surroundings.

WARNING
- Do not disassemble or modify the product. It may cause the product to not operate correctly, and you may fall unexpectedly and be seriously injured.
- Refer to these instructions together with the instructions for your seatpost, and be sure to understand the mechanism for adjusting the seat height. Operating the lever carelessly may cause the seat to drop suddenly, which could cause you to fall and be seriously injured.
- Before attempting to adjust the seat height while riding the bicycle, be sure to become completely familiar with the adjustment mechanism. Otherwise, your feet may slip off the pedals, which could cause you to fall and be seriously injured. You should first ride slowly on a safe, level surface and practice adjusting the seat height thoroughly until you can do so safely without your feet slipping off the pedals.