Julian and Berger - you guys must be lucky. The BSA clutch is a dry clutch (a wet one would be cork or bronze plates) and when used wet it is bound to have problems. After years of having clutches that either won't free properly, drag or slip (dozens of bikes over 50+ years) I stopped putting oil in chaincases. The worst was a Triton, where I had to take the clutch apart every couple of days to wash the plates in petrol, otherwise it slipped just enough so kickstarting it would lose its bite over compression, and starting was nigh impossible. Arrrggggh. Not that much oil usually stays in primary cases anyway - try getting a Velocette chaincase oil tight. Why bother with all that hassle when it's not necessary? Just a squirt with an oil can every thousand miles and then grease it at the same time as doing the rear chain. I take my chains off, thoroughly clean and boil in grease. Only way to get the lubrication where it's needed - inside the chain.
