Parts Lists & Manuals Parts Lists & Manuals 20″ Masonry Saws Models: GMS-20G, MS-20E Operators Manual GMS-20 & MS-20 Operators Manual Parts Lists GMS20 01/22 Starting Serial #220110331 MS20 10/18 Starting Serial# (181010494) GMS20 10/12 Starting Serial#(121010018) GMS20 04/04 Starting Serial#(2013) MS20 10/12 Starting Serial#(121010053) MS20 04/04 Starting Serial#(2005) GMS20_MS20 11/93, Nov1993 GMS20_MS20 11/93, Nov1993