Grasshopper seeks manual for same. Have machine apart; not sure if motor impeller cowling is sealed. I was able to remove it from the motor. Attempting to take cowling off. I do not want to damage the unit. Cutting (lathe) is very last option. I have tried oil, (some) heat, puller device, tapping with drift pins. Nothing has budged the cover. Lots of dirt, dust and rust inside. I am doing an overall repair and cleaning. Any suggestions? I can send image if that will help. Thanks. Signed, A confused grasshopper PS: Serial no. is B 19605 K