Ouxi H9 motor making noise or not pulling? Cause and solution

Ouxi H9 motor makes noise or does not pull

A rattling, grinding, or slipping sound from the rear wheel, or a motor that hums but doesn't provide power. With a hub motor, this usually indicates worn gears or bearings. Below, you'll find out what to check for each cause on your Ouxi H9 and which part you need.

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Most common causes

Worn motor gears

The hub motor contains nylon gears that wear out over time. The motor then makes noise or slips when accelerating. View motor gears.

Bearings or loose axle

A loose axle nut or worn bearing causes play and noise. Check that the axle nuts are properly tightened. View wheels for the Ouxi H9.

Motor connector or motor cable

A damaged motor cable causes jerky riding. The H9 motor (2022-2024) has a black connector. View motors.

Motor failure

If the motor itself is broken, a complete motor or wheel with motor is often the quickest solution. View motors.

What you need to know about the Ouxi H9

The H9 1.0 through 4.0 uses a controller with a longer black motor cable.
The Ouxi H9 has the M5 display (new version), just like some Ouxi V8 2.0 and 3.0 models.
The H9 charges with the 1-pin Ouxi charger.

Step-by-step guide

Start simple: fully charge the battery, reinsert the battery, and check all connectors at the handlebars.
Check the display: note any error code or take a photo.
Send us a photo of the display, connector, or part via WhatsApp. We'll tell you which part you need.
Do it yourself or have it done: order the part, or book an appointment in The Hague or Zoetermeer. Your bike is often ready the same day.

Never work on the electronics while the battery is in the bike, and never open a battery yourself. Lithium batteries can be dangerous if damaged.

Other Ouxi H9 faults

Frequently asked questions

Can I fix this myself?

Simple issues (charging the battery, checking connectors) certainly. For electronics and motors, we recommend the workshop, or first send a photo via WhatsApp.

How much does a repair cost?

View the fixed prices on book an appointment. If you don't know what is wrong, choose the inspection fee (€30), which is waived if we carry out the repair.

Do you have parts for the Ouxi H9 in stock?

Yes, view all parts for the Ouxi H9.