Where do you find instructions on how to disassembe the engine. Lights not working.
Here is the GP40 HO diagram:
http://www.bachmanntrains.com/home-usa/dwg/dwgs/H635X_IS005.pdf (http://www.bachmanntrains.com/home-usa/dwg/dwgs/H635X_IS005.pdf)
very good diagram, how do you get the shell removed?
Remove the fuel tank cover and the screws under the cover.