You will need to remove the entire cowling from the engine. The recoil unit can then be dis-assembled whilst it is still attached to the cowling.
You CAN buy a replacement recoil unit - you have to drill out the rivets and bolt on the replacement, but you still have to remove the cowling to fit the bolts, so there's not much point.
phil_saunders@bigfoot.com
Phil Saunders, June 2008