Part number 506 25 81 03 has now changed to 597 65 11 01 starter pulley & spring kit.
Do you stock part number 9 the recoil spring?
Unfortunately you can't actually buy number 9 on it's own now you have to buy the pulley and spring kit, see below;
https://www.lsengineers.co.uk/catalog/product/view/id/336041
Please, mind that only logged in users can submit questions