1. Engine case: The model number is often stamped on the engine case, near the top of the cylinder head. It may be difficult to see, but it should be there.
2. Frame neck: The model number may also be stamped on the frame neck, just below the handlebars.
3. Owner's manual: If you have the owner's manual for your Harley Davidson, the model number will be listed inside.
If you are still unable to find the model number, you can contact a Harley Davidson dealership and they will be able to help you.