To find a parts diagram for a Mr. Heater Buddy Heater, go to MrHeater.com, click on the Parts and Manuals link, and then click the Search button after entering the serial number of the heater. The available manuals, as of 2015, are for the 2012 through 2014 model years.
To receive parts diagrams and manuals for heater models with manufacture dates in 2011 or earlier, contact the company at 1-800-251-0001 to receive assistance from a Service Department technician. In addition to viewing manuals for Buddy Heater models online, customers can order parts. The company also sells its heaters on the website.