20 BRIGGS AND STRATTON 2-CYCLE ENGINE (MOWER MODELS 12PB, 12SB, 12PC) 12PB,12PC,12SB,14PB,14PZ,14SB,14SC,14SE,14SZ & 14SX 21-In. Mowers (Silver)(SN 010001 - ) PC2264 in MOWER, WALK-BEHIND SZ