Hello...i just purchased a Columbia Par Car golf cart serial number 5k23239C8. I found out that this is an 1988. Not sure what the motor is, Harley..or something else. Started it up and it was loud, very loud. I found hole in muffler fixed that but there was a rattling noise coming from the engine. I was told that the bearing is loose. I have been looking for a bearing but I also need a engine diagram of what to do to replace it. I have never owned a golf cart so I am in the dark when it comes to repairs. Is there any site where I can download a diagram of the engine and how to replace the bearing? Are there any special tools that I will need? Is this a hard job to do it myself?