* John Deere Website: Check the official John Deere website for model specifications. Look for the JD 6110b model and its engine details.
* John Deere Dealer: Contact your local John Deere dealer. They will have access to the most up-to-date information on the tractor.
* Operator's Manual: If you own a JD 6110b, refer to the operator's manual. It will contain details about the engine.
Remember, the information I provide is based on general knowledge and may not be entirely accurate. Always consult reliable sources for specific details about machinery.