How do I replace the pull start? - Poulan Pro PP4620AVX 46cc Gas Chainsaw With 20" Bar

Remove the four screws securing the starter houseing, with the starter removed, pull the cord out, tuck the cord into the cut a way in the side of the pulley and allow the cord to wind in slowley to let the tention off the spring, make sure all the tention has gone, now remove the centre screw, take away the pulley centre and the round spring from behind, note the hole in the pulley and the centre hub for the spring location, now carefully remove the pulley, be aware there is a large spring behind, remove the knot in the end and remove the starter handle, fit the cord back into the new pulley, refit the pulley into the cover making sure to locate into the spring behind, thread the cord back through the cover and reconnect the handle, knot the cord, re fit the round spring back into the locating hole in the pulley, re fit the pulley hub making sure the spring fits into the hole in the hub, re fit the securing screw, now put the cord back into the cut a way in the side of the pulley, wind up the spring, allow it to pull the cord back into the starter, only wind it enough to pull the cord fully back into the cover, re fit the starter.