[TSM]

Originally Posted by Spiderman

Something hs fallen from under your pillion seat down to where the lock body is and is stopping it from turning thru its full range of motion. I know this as the same happened to me and it turned out to be a roll of electrical tape i had under the seat.

Try the front seat off idea mate and some coat hanger wire to remove offending item.

Good luck and let us know what it was down there so we can all have a giggle at your expense

and what did i do....

wack the seat down as you turn the key or get someone heavy to sit on it