On this model/year bike, it’s critical to shim the oil filter canister correctly to avoid loss of oil to the engine. I show how I do that. I also show how I install the oil cooler, thermostat-oil filter cover, and the shims and o-rings to properly seal the cover and oil filter canister.
Here is a short video summary of how I do this work.
VIDEO: 1983 BMW R100RS Shim Oil Filter Canister, Install Oil Cooler & Filter
Here are some pictures of the work.