You should regularly wipe down your Horizon Fitness GR3 indoor bike as well as check for loose working parts. Nuts, bolts, and screws should be checked once weekly to ensure they’re tightened. This is also a good time to lubricate the chain. Every month, inspect brake pads, seat pad, and pedals as well as lubricate the seat, brake pads, and handlebars monthly. For lubrication, it’s best to use the product provided with your machine, and reorder as necessary.