Someone recently had a problem with an oil leak on a 1200. Turned out that it had an 1100 head on one side and the valve cover didn't fit properly resulting in the leak. Seems the covers are not the same.
RayJay is correct…. unless they are really old and have flattened out. If they are still soft rubber then you should be able to reuse them.
Leaks occur for a number of reasons…. age is one. Not being properly installed in the groove of the valve cover is another. The gasket actually can get twisted during installation and it'll leak. Leaks at the corners of the cam tower is another reason… that's an easy fix: apply a small dab of silicon sealant to the 4 cam tower corners of the valve cover gasket. Install on the head and LET IT DRY before starting up the engine. That usually works.
For future reference: the 1000's and 1100's use the same valve cover gasket. The 1200's are different.
Nah it is not leaking, just old. The bike has never been apart and has the original gaskets. It takes the dealer weeks to get parts in Montana and I hoped to by pass this problem. Thanks for the info guys.
If the cover is leaking then don't forget to get new bolt seals too. I replaced the gasket twice and it always leaked until I replaced the rubber seals around the bolts, this allowed the bolts to push the cover tighter onto the valve cover gasket and thus seal up the leaks.