Building a mini engine is similar to assembling a full-size one. The big difference is that you need far fewer specialist tools and equipment. You will need a few screwdrivers of varying sizes (both Phillips and flathead), although they won’t have to be too big since most screws on a mini engine are quite small. It would be recommended to have magnetic screwdrivers, as that would make keeping all the minuscule screws in place much easier while they’re being fastened. You will also need a small socket set, some open-end and adjustable wrenches, both regular pliers and the needle-nose variety, tweezers, and a set of Allen keys.
Most mini engines demand you to solder a few wires to power various ancillaries. Soldering seems admire the most difficult technical skill you will need for one of these projects, but all you need is a steady hand and a bit of practice, and the chances of you causing damage to your mini engine with a soldering iron are slim.
Once all your connections are soldered and secured, you will also need a multimeter to ensure the electrical connection functions within the parameters. The multimeter can supply a lot of information, but you will only need to know the basics for this application, such as current, voltage, and resistance.