Since the last update, the keys have arrived. I gave all the locks a good spray with WD-40, and all work well! I connected a battery and all of the electrics work except for 3 out of 4 indicators and the starter. However, if I short across the terminals of the solenoid, the starter spins the engine easily. I removed the tank, (very rusty inside) and found that the rubber pipe that links the two bottom edges of the tank had decomposed and fell off. I had expected to replace all the rubber hoses anyway, so this wasn't a surprise. I squirted some petrol down the petrol pipes and tried starting the engine - nothing! I took out the plugs and there was no spark. A quick clean of the points (takes you back, eh?) and I had a spark, but the bike still wouldn't start. This wasn't really a surprise as the bike has obviously been sitting for a while and I assumed that the carbs would need cleaned out.
I removed the RHS side panel to get at the airfilter. This would have to be removed to get at the carb. The panel was very hard to remove as the rubber mounts had become brittle with age (it was also about 0 degrees C at the time, which wouldn't have helped!) I got the carb off OK, and gave it a good clean out. However, the rubber drain pipe on the flat bowl snapped off! Now for the LHS one and a problem arose.
I couldn't get the side panel off as it was also very tight on its rubber mounts, and it is also cracked almost in two. I didn't want to pull too hard at it in case I broke it completely, and I'm not sure whether you can remove this panel without removing the exhaust first. I was running out of time at this point, so sprayed the exhaust nuts and bolts with WD-40 and left them until I've got more time.