I am working on a mule that is a diesel enigne. The people who had it before put gas in the tank and there was water as well. It sat like this for month. I have drained the tank and replaced the fuel filter. I'm trying to find out how to time this engine. I noticed the big gear in the middle, but i dont see any timing marks. I'm trying to pull the fuel injection pump off to clean it out. Also does anyone have a diagram of how the injection pump is put together?