Starter pulley

part number 503876301 503 87 63 01

New old stock from closed out dealer. 

Fits  Some models of 340 345 350. There were a couple of styles so check to make sure this is the correct one for your saw.  A little dusty/dirty from years of storage.

Up to 010604200 (340)
Up to 010602850 (345)
Up to 010702450 (350)