1. Vehicle Owner's Manual: If you have the vehicle's owner's manual, it should have a section that includes a drive belt diagram. Check the index of the manual for "Drive Belt" or a related term.
2. Online Manuals and Diagrams: There are several websites and online databases that provide free access to vehicle manuals, diagrams, and specifications. Some popular resources include:
- [Haynes Manuals](https://haynes.com/)
- [AutoZone](https://www.autozone.com/)
- [Advanced Auto Parts](https://www.advanceautoparts.com/)
- [AutoMD](https://www.automd.com/)
- [AllDataDIY](https://www.alldatadiy.com/)
3. Vehicle Repair Forums and Communities: There are also online forums and communities dedicated to Land Rovers and Range Rovers, where you can often find helpful information and advice. Members may share drive belt diagrams or point you to a helpful resource.
4. Auto Parts Stores: If you visit a local auto parts store, they may be able to provide a drive belt diagram or suggest where you can find one.
It's worth noting that drive belt diagrams can vary based on the specific engine and model configuration of your vehicle, so it's important to ensure you're looking at the correct diagram for your Range Rover SE 4.0. Additionally, if you're not comfortable performing the work yourself, it's best to consult with a qualified mechanic or auto repair professional.