How to tighten the brakes on the Xiaomi electric scooter: adjusting the disk and drum mechanism

The braking system is one of the most critical components of Xiaomi's scooter, which your safety depends on (M365, Pro 2, 1S, Essential brakes start to get worse: the braking distance increases, creaks or vibrations when you press the lever, causes can be different from natural wear of the pads to weakening of the cable or contamination of the disc. But in 80% of cases, the problem is solved by a simple adjustment of the brakes, which can be done independently in 10-15 minutes.

In this article, we will discuss: 1. How to determine that the brakes need a lift (symptoms and tests). 2. Step-by-step instructions for disc and drum brakes on different Xiaomi models. 3. Typical errors that lead to brake system failure. 4. When adjustment does not help and requires replacement of the pads or cable.

Don't rush to bring a scooter to the service: most problems are solved without special tools. It's enough hexagonal for 2-3 mm, screwdriver and 20 minutes of time. And if you've never repaired equipment, don't worry: at the end of the article there are some. FAQ Answering frequent questions and video instructions.

1. Signs of weak brakes: when adjustment is needed

The first signal is an increase in the braking distance, and if the scooter used to stop after 1-2 meters, and now it's going another 3-4, it's time to check the system.

• 🔊 Screaming or screeching when braking (most often due to wear of pads or getting dirt on the disc).
• 🛑 The lever of the brake "falls down" to the handle - this is a sign of a stretched cable.
• 🌀 Uneven braking: the scooter leads to the side (one shoe is clamped stronger than the other).
• 🔄 The wheel is blocked by light pressing on the lever - a pulled cable or a deformed disk.

To accurately diagnose the problem, do a test on the go:

1. Accelerate to 15-20 km / h on a flat surface.
2. Press the brake lever sharply (not blocking the wheel completely).
3. Evaluate the stopping distance and smoothness of the stop.

If the scooter stops for longer than 3 seconds or the lever goes too easily, adjustment is required, and if the brakes are "enough" after only a few presses, the pads are likely to be worn out or the cable needs to be replaced.

2 Tools and training: what will be needed

To adjust the brakes on Xiaomi M365/Pro/1S You don't need professional tools:

• 🔧 Hexagons by 2 mm and 3 mm (for adjusting bolts).
• 🔨 Screwdriver cross (for removing the drum cover on models with rear drum brake).
• 🧴 WD-40 or alcohol to clean the disc/patches of dirt.
• 📏 Line or bar (optional, to measure the gap between the pads and the disc).
• 🔦 Lantern (to inspect the mechanism in dark places).

Before the start of the work:

1. Turn off the scooter and remove the battery (to avoid accidental switching on).
2. Put the scooter on the stand or turn the wheels upwards (more convenient to work).
3. Clean the brake mechanism of dirt with a dry cloth.

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If the brake disc is covered with oily film (for example, after driving in puddles), wipe it with alcohol.

3. Adjustment of disc brakes on Xiaomi M365/Pro/1S

Most Xiaomi models are equipped with mechanical disc brakes (except the Mi Electric Scooter Essential, where the drum is in the front).

Step 1: Tightening the cable

Weakened cable is the most common cause of weak brakes.

1. Find the adjustment bolt on the brake lever (near the gas handle) that looks like a plastic nut with slots.
2. Turn the bolt clockwise by 1-2 turns (this will increase the tension of the cable).
3. Check the lever's stroke: it should be pressed tightly, but not lock the wheel with a light press.

Step 2: Centering the pads

If after stretching the cable the wheel rubs against the pads or brakes unevenly, you need to center the caliper:

1. Weaken the two bolts of the caliper attachment (hexagon by 3 mm).
2. Press the brake lever and hold it in the pressed position.
3. Tighten the bolts back without letting go of the lever. The pads will automatically stand symmetrically relative to the disc.

The wheel rotates freely without friction|The braking distance was reduced to 1-2 meters|The lever doesn't fall to the handle|No creaking or vibration when braking-->

If the brakes are still weak after adjusting, check:

• 🛠️ Wearing of the pads (thickness should be) ≥ 2 mm).
• 🔄 Disk deformation (scroll the wheel – the disc should not "beat»).
• 🧵 Condition of the cable (whether there are cracks or corrosion).

Adjustment of the drum brake (Xiaomi Essential and rear brake on other models)

Drum brakes are less common, but they're easier to adjust, and the main problem is the wear of the pads and the loosening of the springs.

1. Remove the drum cover (unscrew 2 screws with a cross screwdriver).
2. Find the adjustment bolt inside the drum (usually under the rubber cap).
3. Turn the bolt clockwise so that the pads approach the drum.
4. Check the rotation of the wheel: it should rotate freely, but with light resistance.

If the pads are worn (thickness) < 1 mm), they need to be replaced:

1. Remove the locking ring with pliers.
2. Remove the springs and old pads.
3. Install new pads (such as art. B02T06YM Xiaomi Essential).
4. Collect the mechanism in reverse order and adjust the gap.

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Drum brakes require adjustment every 500 to 1,000 kilometers, and if you don't tighten the pads, they wear off unevenly and can jam the wheel.

Typical errors in brake adjustment

Not only does the brakes get worse, but it can also break. Here's what you can't do:

• ❌ To pull the cable - this leads to premature wear of pads and disc, as well as to overheating of the brake system.
• ❌ Use it. WD-40 If you want to lubricate the cable, it will temporarily improve your ride, but it will lead to dirt accumulation.
• ❌ Adjust the brakes by eye without checking the braking distance. The optimal gap between the pad and the disc is 0.2-0.5 mm.
• ❌ Ignore the creak - it signals wear of the pads or foreign objects (sand, metal shavings).

Another common mistake is unsymmetrical adjustment (one pad presses harder than the other) which causes the scooter to move aside when braking and uneven wear on the disc. To avoid a problem, always check the caliper's centering.

⚠️ Attention! If you lock the wheel after you adjust it when you press the lever lightly, relax the cable by 0.5-1 turns. Tight brakes are dangerous, they can jam the wheel on the move, especially at high speed.

6.When adjustment does not help: signs of wear of parts

If the brakes are weak after all the manipulations, the problem may be in the worn-out details.

For example, if the pads are worn to metal, the adjustment will only accelerate the wear of the disc, and a stretched cable with cracks can break at any time, which is dangerous at high speed.

⚠️ Attention! On the Xiaomi Pro 2 and 1S If the front pads wear up to 1 mm, an emergency shutdown of the engine (protection against overheating) can work. If the scooter suddenly deafens during braking, check the pads!

7. Prevention: how to prolong the life of brakes

To make the brakes on Xiaomi last longer:

• 🚿 Wash the scooter after riding on the mud - sand and salt destroy the pads and disc.
• 🛑 Avoid heavy braking at high speed (especially on wet roads).
• 🔧 Check the tension of the cable every 500 km.
• 🌡️ Let the brakes cool down after long descents (overheating reduces efficiency by 40%).
• 🛒 Use the original pads (for example, B02T06YM for M365). Analogues often creak and wear out faster.

If you often drive in the rain, dry the brakes for 10-15 minutes after the trip when idling (no load) and this will prevent corrosion of the disc and cable.

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To check the condition of the brakes, it is enough to lift the scooter behind the back and scroll the wheel. If it stops itself after 1-2 revolutions, the pads are too clamped. Normally, the wheel should rotate freely for 5-10 seconds.

FAQ: Frequent questions about Xiaomi brakes