# Installing a CEMOTO Motor — Step-by-Step

> Wiring orientation, phase order, mounting and the first-run checks that confirm you got it right.
>
> **Applies to:** D-series

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<div align="center">

<iframe width="720" height="405"
        src="https://www.youtube.com/embed/BEzjheNY9H4?rel=0"
        title="How to Install a CEMOTO Motor | Step-by-Step Tutorial"
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<sub>*How to Install a CEMOTO Motor | Step-by-Step Tutorial* — if the player does not load, [open the video on YouTube](https://www.youtube.com/watch?v=BEzjheNY9H4).</sub>

</div>

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## What you need

| Tool | Notes |
| --- | --- |
| Socket set | Axle nuts and mounting hardware |
| Torque wrench | See [Torque Reference](https://help.cemotoride.com/link/325) |
| Insulating tape / heat shrink | For any repaired cable run |
| Cable ties | Replace the ones you cut |

> ⚠ **Warranty note.** Opening a motor voids the warranty on that part. Follow CEMOTO support's instructions for a warranty replacement. See [Warranty Claims](https://help.cemotoride.com/link/389).

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## Steps

1. **Support the bike** so the wheel is clear of the ground.
2. **Route the motor cable before mounting.** Fit the cable into its frame guides first — it is far harder once the wheel is in place.
3. **Seat the motor in the swingarm/dropouts**, checking any spacers or torque washers go back in the same positions.
4. **Fit the axle nuts finger-tight**, then torque to specification with the wheel aligned.
5. **Connect the three phase wires.** They are color-matched — **match them exactly**. Wrong phase order causes rough running or no rotation at all.
6. **Connect the hall sensor plug.** Small, multi-pin, easy to seat only halfway. Push until it clicks, and check no pin has backed out.
7. **Refit the chain / belt** and set the tension — approximately 15 mm slack where a chain is used.
8. **Check the brake** runs true and does not bind on the disc.
9. **Rotate the wheel by hand** before applying power. It must turn freely with no rubbing.
10. **Power on and test at walking pace**, then check for error codes. E07 here means the phase or hall connection needs rechecking — see [E07](https://help.cemotoride.com/link/360).

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## Watch out for

- **Cross-threading an axle nut.** Start them by hand, always.
- **Getting phase order wrong.** Match the colors; do not trust that they were right before.
- **Leaving the hall sensor plug half-seated.** It produces an intermittent E07 that is maddening to trace later.
- **Reusing cut cable ties** — replace them.

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## Related

- [Motor Removal](https://help.cemotoride.com/link/353)
- [Motor Error E07](https://help.cemotoride.com/link/360)
- [Torque Reference](https://help.cemotoride.com/link/325)
- [Tutorials Index](https://help.cemotoride.com/link/393)