Using this oven thermostat is quite simple. First, make sure your oven is turned off and unplugged for safety. Then, locate the old thermostat in your oven and carefully remove it, following the wiring layout. Connect the new thermostat using the 6.4mm spade terminals, ensuring the connections match the old one. Once connected, mount it in place using the 28mm - apart holes. When it comes to safety, always handle electrical components with care. Never touch the terminals when the oven is plugged in. For maintenance, keep the thermostat clean by gently wiping it with a dry cloth. If you notice any problems like inaccurate temperature readings, check the connections first. If the issue persists, it might be time to replace the thermostat.