Here are some photos for replacing a MAMETORA MC 181 GED 18R 181cc engine with a 22mm shaft with an ECO EM70 engine, also with a 22mm shaft. This requires raising it by approximately 40mm to maintain the 280cm center-to-center distance between the engine pulley and the gearbox pulley, preventing the cylinder head from hitting the handlebars. It also needs to be offset by about 20mm on the starter side to align the axes of the two pulleys.
