CS-520 - Echo Chainsaw (SN: 07001001 - 07999999) Parts & Diagrams Parts Lists & Diagrams

CS-520 chain saw - 50.1 cc engine (sb1080 short block). Guide bars: 16", 18", 20" - 0.050" gauge (Microlite Pro). Sawing chains: 16", 18", 20" - 0.050" gauge, 0.325" pitch (micro-lite).