While I had the rear wheel out for a tyre change, I decided to grease the splines of the rear drive. Some pics and instructions for the similar V7 are here: http://www.flickr.com/photos/sign216/sets/72157625569987011/with/5323995391/

When removing the rear drive from the Breva 750, it's easy for the drive shaft to be pulled along and dislodge the uni-joint from the spline at the back of the gear box. This is what happened to me.

It required the swing arm to be removed in order to access the shaft to re-attach it. Sounds daunting but it was surprisingly easy and really only a 20 minute job to get access, and similar to re-assemble. You need to gain access to the swing arm "pins", the threaded sockets holding the swing arm. This means removing the metal footrest panels.

	Begine by removing the seat, plastic side panels, disconnecting the rear shockies and rear brake. Rest the swing arm on a stool or block of wood. Remove the 4 bolts holding the right panel. Don't remove the bolt holding the rear brake lever. One bolt is longer than the others so remember where it goes. There's no need to remove all the brake lines, etc., but you may need to snip some cable ties. I found that only the brake light lead needed to be disconnected (near finger). I then placed the panel on some rags on the floor to prevent scratches.
	Remove the left hand panel. This has the seat latch connected to it - just move the panel forward and tie it to the seat frame. Go to the right hand side and undo the hose clamp around the rubber boot which protects the universal joint.
	You can then access the swing arm pins. Remove the chrome nuts which cover the pins. At this stage you might like to measure how much each pin is proud of the frame - ours had a 1 mm difference so I reassembled it that way. Another assembly technique was told to me later and described below. Now undo the pins with an Allen key. The swing arm is now free. There is a spacer washer on the right hand side, so locate it and ensure it goes back on. To gain complete freedom of movement, I removed the two cable clamps under the swing arm which held the brake line and speedo cable. Note the short length of the sleeve on the end of the uni coupling which slips onto the gear box pinion. The drive shaft only has to move an inch and it's off! You can now inspect the back of the gear box, too, for any sign of oil leaks. It's also a good time to clean the back of the gear box, lubricate the clutch operating lever and the gear change linkages.
	The whole point of this exercise was to grease the pinions, so give everything a thorough greasing. I use Penrite lithium-based extreme pressure grease. Reassemble the drive shaft onto the back of the gear box, slip the swing arm back on, and screw the swing arm pins back. Screw the LEFT hand side pin in until the spacer on the right hand side is taken up and the pin is just firm. Then screw in the RIGHT hand side pin until it is just firm. Replace the lock nuts. Replace the rear drive, and put the wheel back on loosely. Reassemble the brake line clamps, panels, etc. Reassemble the rear shockies, wheel, brake, etc. Finally, check if there are any left-over screw, bolts, nuts, etc!