HI-Bird QH250GY has an oil leak in the square hole next to the exhaust port on the head. You can see the head bolt that runs through the square hole, and it's one that holds the head to the cylinder. Has to be retorqued every so many miles, etc.

Is there a seal or gasket of some kind, the head to cylinder gasket is below all this a few inches.

Is there an easy diagram of this area somebody has to explain what needs repaired?

I can send a photo but haven't took a photo yet.

Thanks,
Stacy