Some good how-to material.

+XR Disassembly

Open Controller box

Onewheel Workbench: Fix LED Light & Secure Ferrite Ring

Open Battery box

How to remove and replace your battery cell pack for Onewheel XR.

Bearings change

How to change the bearings on a Onewheel with Sean Nelson

Tire change

EASIEST Onewheel XR+ Tire Change - Step by Step w/ Jeff McCosker