Shamelessly stolen from the Banditforum, but from an initial glance the lock on my Wee seems to be identical to the Bandit, so if anyone has a sticky ignition barrel here is the easy way to refurb it.
"If your ignition lock needs a serious amount of wiggle & jiggle to turn the key then it really is pish easy to refurb it. NEVER EVER spray WD40 into the key slot, this washes away the grease & causes the problem.
1. Undo the 2x screws & take off the outer cap. The inner cap should just lift off.
2. Insert the key to help pull out the cylinder.
3. Use long nose pliers to pull out the spring.
4. 3x working parts. Thoroughly degrease & clean them, I use an ultrasonic cleaner but a toothbrush & parrafin or WD40 is OK. The brass pins in the cylinder are spring loaded & need a smooth, free n easy action.
5. The flap on the inner cap usually works after a thorough degrease, if not gently pry up the casing. If that fails then pry up the 2x tabs to dissassemble & again thoroughly degrease. Don't lose that spring . . . it's tiny & hard to find :icon_lol:
6. The raised areas inside the barrel need to be thoroughly degreased then use a needle file to deburr them especially the centre one, this is the on'off part of the lock.
Make sure that the drain hole is unblocked.
7. These brass pins should all be level when the key is inserted. If you need to push your key forward to turn it then pins 1-4 are the culprits. I use a fine wheel on a bench grinder to carefully cut them back down.
8. Do a dry run with no grease to check the action of the key. Insert the spring, then the cylinder, the inner cap, then the outer cap. You don't have to screw it down for a dry run.
If it's all OK then smear some grease inside the barrel to fill the channels between the raised areas & also on the outside of the cylinder. DO NOT totally fill the barrell with grease or force it inside the cylinder, there needs to be a clear way for water to drain out of the lock & putting your key into a cylinder full of grease is not good for your pockets when you take the key out."