Thank you for the prompt relies. Sorry to be so dense, but I still can't work out how to finish this job. I think some of the info offered must apply to later bikes. I am working on a 1985 K100RS. My goal is to remove the throttle bodies and replace their o-rings, the boots and fuel hoses. I have removed one hose clamp at the front of the air filter cover. The hose is oval at the point of exit. I take it to be the duct to the plenum. The hose will not separate from the cover of the air filter. I want to remove this cover to gain access to the screws that fix the bottom of the airbox to the engine. there isn't room to reach the screws on the bottom with the cover in place. I assume this is the only way to remove the throttle bodies. True? The right rear corner of the air filter cover has two hex head screws which I removed. That did nothing to help me remove the air filter cover. Are those the screws that are attached to the air flow meter (AFM)? I can't find any others on the cover. I can't see how I can pull the AFM back if I can't get my hand under the air filter cover. What am I missing?
I sprayed the edge of the airbox-plenum duct with a lube and gave up for today. Perhaps that overnight soak will allow the oval end of the duct to be withdrawn tomorrow. If it doesn't loosen, I'll start thinking of ways to remove the hose clamp on the other end of the duct.
I've always considered wrenching on my old airheads to be quality garage time. Actually, it's a therapy of sorts. This K-bike is not fun to work on at all. I like riding it; it handles well, has good smooth power, but I'm not enjoying working on it in the least. I hope that, once sorted out, I don't have to turn a wrench on it again for a long, long time. If that doesn't prove to be the case, it's not going to be in my garage very long. :dunno2: