Pretty easy really Take the wheel out, and remove the fun bolts + washers Pull the driver (bit with the cog on) off the axle Give the teeth a clean, ideally with a toothbrush or a rag. Remove ANY! shards/chips/swarfs of metal in there as this causes skipping! Next clean the pawls and springs (if you're that anal) with a rag and remove any shite. You can take them out by sliding them upwards and the same with the springs Then put them back in. If it helps take 3 sets out and leave one in, so you remember which way round they all go Once re-assembled, slide the driver back on and give it a gentle push+rotation to get it to sit right DONE