Operating Guide
13
34 590 01 Rev. A
KohlerPower.com
EN
Specications
Model PRO 12.3 EFI
Overall Dimensions (L x W x H)
35.2 in. (895 mm) 
22.4 in. (570 mm) 
30.3 in. (770 mm)
Dry Weight 306 lbs. (162 kg)
AC Rated Power 10,500 Watt
(120 Volts x 87.5 Amps) 
(240 Volts x 43.8 Amps)
AC Maximum Power 12,300 Watt
(120 Volts x 102.5 Amps) 
(240 Volts x 51.3 Amps)
Number of Phase Single Phase 240 Volts
DC Rated Power 100 Watt (12 Volts x 8.3 Amps)
Engine Specications
Bore 3.2 in. (80 mm)
Stroke 2.72 in. (69 mm)
Displacement 42.4 cu. in. (694 cc)
Oil Capacity (Rell) 1.7-2.0 U.S. qt. (1.6-1.9 L)
Maximum Angle of Operation (@ full oil level)* 25°
Run Time 10 hours (1/2 load)
Fuel See fuel section
Fuel Tank Capacity 8.7 U.S. gal. (33.0 L)
Spark Plug Gap 0.03 in. (0.76 mm)
*Exceeding maximum angle of operation may cause engine damage from insufcient lubrication.
Additional specication information can be found at KohlerPower.com.
Exhaust Emission Control System for model PRO 12.3 EFI is EM, O2S, ECM, MPI for U.S. EPA, 
California, and Europe.










