# Unboxing & Assembling the D02 Electric Dirt Bike

> Crate to first ride: front wheel, handlebars, brake lever, footpegs, the pre-ride check, and the 0-gear power-on sequence that catches most people out.
>
> **Applies to:** D-series (D02 Classic, D02 Track, D03 Pro, D03 Beast)

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        title="Off-Road Electric Dirt Bike D02 | Unboxing & Assembly"
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<sub>*Off-Road Electric Dirt Bike D02 | Unboxing & Assembly* — if the player does not load, [open the video on YouTube](https://www.youtube.com/watch?v=bbcN3s3WUfg).</sub>

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## What you need

| Tool | Notes |
| --- | --- |
| 4 / 5 / 6 mm hex keys | Supplied with the bike |
| 10 / 13 / 15 mm spanners | Supplied with the bike |
| Box cutter or side cutters | To open the carton — never cut deep enough to reach the bike |
| Torque wrench | Recommended; see [Torque Reference](https://wiki.cemotoride.com/link/325) |

**Allow 45–60 minutes.** Work on a clear, flat surface with room to walk around the bike.

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## Steps

1. **Cut the carton straps and lift the box off.** Keep the carton — it is the safest way to transport the bike later.
2. **Remove the packaging** holding the bars, front wheel and footpegs to the frame. Do not discard the hardware bag.
3. **Fit the front wheel.** Raise the front of the frame, slot the wheel in, insert the axle and tighten — leave it snug, not final-tight, until the brake is checked.
4. **Fit the handlebars.** Align the bar with the clamp marks, tighten the four clamp bolts evenly in a cross pattern.
5. **Fit the brake lever and check the brake.** Squeeze the lever — firm, not spongy. See [Installing the Front Disc Brake](https://wiki.cemotoride.com/link/351) if the caliper needs centering.
6. **Fit the footpegs**, then the mirrors and any further accessories supplied.
7. **Check the battery is seated** and the connector is fully home.
8. **Run the pre-ride check** before first power-on — see [Pre-Ride Inspection](https://wiki.cemotoride.com/link/300).

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## The 0-gear trap

**The most common "my new bike won't start" call.**

On a D-series bike the display shows a **gear number**. If it reads **0**, the bike will not drive — this is not a fault. Press the **+** button to select gear 1, then ride. See [Won't Turn On](https://wiki.cemotoride.com/link/365).

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## Watch out for

- **Over-tightening the bar clamps** — crushes the bar and creates a stress point. Alternate bolts, bring them up evenly.
- **A spongy brake lever** — usually air or an off-center caliper, not a failed brake.
- **Forgetting the first-ride fastener check** — fasteners settle in the first few miles. Re-check after your first ride.

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## Related

- [Pre-Ride Inspection](https://wiki.cemotoride.com/link/300)
- [Torque Reference](https://wiki.cemotoride.com/link/325)
- [Front Disc Brake Installation](https://wiki.cemotoride.com/link/351)
- [Tutorials Index](https://wiki.cemotoride.com/link/393)