On the RD400 the clutch is on the right-hand side of the engine and is operated via a pushrod right through the engine. There is a ball bearing on each end of the clutch pushrod and, as these checked out OK, it was off with the right-hand casing after draining the oil from the gearbox which, incidentally, was a lovely, thick and grey. The casing will come off without taking the brake pedal off (the reason to leave it on will become apparent later on). First bit off is the kick-start, then the casing over the oil pump; just three screws here