As a new GW Motor Trike owner I have been collecting documentation to assist me in becoming familiar with my new to me trike. I have acquired an owner's manual and service manual. There wasn't much available about the Motor Trike conversion until a forum member sent me a link to www.junkmaster.com
This is a comprehensive service manual with photographs and diagrams on servicing Motor Trikes. I printed out the manual and took it to my local FEDX/Kinko's and had them add a spiral notebook out of it. It made a great service manual and with the spiral it's easy to use. Cost was $4.00 dollars for the spiral.