Eaton Corporation (Eaton) is recalling certain Eaton Fuller FR-Series 10-speed manual transmissions, models FR-14210B, FRF-15210B, FRF-9210B, FRM-15210B, FRO-11210B, FRO-13210B, FRO-14210C, FRO-15210C, FRO-16210B, FRO-16210C, FROF-11210C, FROF-12210C, FROF-13210C, FROF-14210C, FROF-15210C, and FROF-16210C, manufactured December 18, 2014, to December 21, 2014. When the transmission shift lever is moved from reverse to neutral, the reverse gear may stay engaged. When the transmission shift lever is moved from reverse to a forward gear position, the transmission may mechanically lock because both the reverse gear and forward gear are simultaneously engaged.