1. Suzuki service manual: The official Suzuki service manual for your bike should include the recommended carburetor settings. You might be able to find a digital version of the service manual online, or you can purchase a physical copy from a motorcycle parts dealer or online retailer.
2. Online forums and communities: There are many online forums and communities dedicated to Suzuki motorcycles, where you can find information and advice from other GS 550 E owners and enthusiasts. Some popular forums include the Suzuki Riders Forums and the GS Resources forum.
3. Parts catalogs: Some motorcycle parts catalogs, such as those from Yamaha, include recommended carburetor settings for specific bikes and years. You can check online parts catalogs or contact your local Yamaha dealer for more information.
4. Local motorcycle shops: If you're unable to find the carburetor settings you need online, you can also try asking at your local motorcycle repair shop. Experienced mechanics may be able to provide you with the information you're looking for.