Kohler 20EORZ Service

TP-6073 4/06 15Section 1 Specifications
1.2 Engine Specifications
Component
7.5EOR/6EFOR,
7.5EORZ/6EFORZ
10EOR/9EFOR,
10EORZ/9EFORZ
15EOR/12.5EFOR,
15EORZ/12.5EFORZ
20EOR/16.5EFOR,
20EORZ/16.5EFORZ
Make
Yanmar Yanmar Yanmar Yanmar
Model
3TNE74 3TNE82A 4TNE84 4TNE84-T
Cylinders, arrangement
3, inline 3, inline 4, inline 4, inline
Compression ratio
23.0:1 18.0:1 17.79:1 16.99:1
Combustion system
Swirl precombustion
chamber
Direct injection Direct injection Direct injection
Displacement, L (cu. in.)
1.006 (61.39) 1.330 (81.14) 1.995 (121.74) 1.995 (121.74)
Rated horsepower
14.0/11.6 17.7/14.8 26.1/22.0 36.1/28.6
Rated rpm
1800/1500 1800/1500 1800/1500 1800/1500
Bore,mm(in.)
74 (2.91) 82 (3.23) 84 (3.31) 84 (3.31)
Stroke,mm(in.)
78 (3.07) 84 (3.31) 90 (3.54) 90 (3.54)
Connecting rod material
Forged carbon steel Forged carbon steel Forged carbon steel Forged carbon steel
Cylinder block material
Cast iron Cast iron Cast iron Cast iron
Cylinder head material
Cast iron Cast iron Cast iron Cast iron
Piston rings
2 compression, 1 oil 2 compression, 1 oil 2 compression, 1 oil 2 compression, 1 oil
Crankshaft material
Heat treated, ductile
iron casting
Heat treated, ductile
iron casting
Heat treated, ductile
iron casting
Heat treated, ductile
iron casting
Main bearings: number, type
2, replaceable sleeve 2, replaceable sleeve 2, replaceable sleeve 2, replaceable sleeve
Injection pump
Yanmar YPES Yanmar YPES Yanmar YPES Yanmar YPES
Governor
Mechanical Mechanical Mechanical Mechanical
Lubrication system
Full pressure Full pressure Full pressure Full pressure
Oil capacity, L (qt.)
2.3 (2.4) 5.2 (5.5) 5.8 (6.1) 5.8 (6.1)
Oil type
CC or CD CC or CD CC or CD CC or CD
Oil pressure, kPa (psi)
172-241 (25-35) 172-241 (25-35) 172-241 (25-35) 245-343 (35-49)
Low oil pressure, kPa (psi)
49.0 (7.11) 49.0 (7.11) 49.0 (7.11) 49.0 (7.11)
High engine temperature, _C(_F)
110 ±3 (230 ±5.4) 110 ±3 (230 ±5.4) 110 ±3 (230 ±5.4) 110 ±3 (230 ±5.4)
Fuel pump
Electric Electric Electric Electric
Maximum lift, m (ft.)
1 (3.28) 1 (3.28) 1 (3.28) 1 (3.28)
Fuel type
Diesel fuel ISO 8217
DMA, BS2869 A1 or A2
Diesel fuel ISO 8217
DMA, BS2869 A1 or A2
Diesel fuel ISO 8217
DMA, BS2869 A1 or A2
Diesel fuel ISO 8217
DMA, BS2869 A1 or A2
Battery voltage
12 12 12 12
Battery ground
Negative Negative Negative Negative
Battery recommendation, min.
625 CCA at 0°F,
100 amp/hr.
625 CCA at 0°F,
100 amp/hr.
625 CCA at 0°F,
100 amp/hr.
625 CCA at 0°F,
100 amp/hr.
Starter motor
Gear reduction Gear reduction Gear reduction Gear reduction
Cooling system
Liquid Liquid Liquid Liquid
Cooling system capacity, L (qt.),
engine block only
3.8 (4.0) 2.5 (2.6) 2.7 (2.85) 2.7 (2.85)

Kohler 20EORZ Specifications

General

Brand	Kohler
Model	20EORZ
Category	Portable Generator
Language	English