Using this model is quite straightforward. Just connect it to a DC power source for analog control and watch it run. Since it's a model that has some tarnish, it's normal and doesn't affect performance. When handling, be gentle as it's a fragile item. For maintenance, you can keep it in a dry place to prevent further tarnishing. Every once in a while, you can give it a light cleaning. If you notice any excessive noise or issues with the running, you can check the lubrication. Just like we've done before, you can add a bit of lubricant to the moving parts. And remember, if you're not satisfied with your purchase, let us know within 30 days for a money - back guarantee, though you'll be responsible for return shipping if the item isn't damaged on arrival.