Spec Sheet

G4-288 (KG100R) 9/21c
Lubrication
Lubricating System 60 Hz
Type Full Pressure
Oil pan capacity, L (qt.) 
5.7 (6.0)
Oil pan capacity with filter and oil cooler,
L (qt.) 
9.0 (9.5)
Oil filter: quantity, type 
1, Cartridge
 Kohler recommends the use of Kohler Genuine oil and filters.
Cooling
Radiator System 60 Hz
Ambient temperature, C (F)
45 (113)
Engine jacket water capacity, L (gal.) 7.3 (1.93)
Radiator system capacity, including
engine, L (gal.)
28.4 (7.5)
Engine jacket water flow, Lpm (gpm) 126 (33.3)
Heat rejected to cooling water at rated
kW, dry exhaust, kW (Btu/min.)
73.9 (4207)
Heat rejected to charge air cooler at
rated kW, dry exhaust, kW (Btu/min.)
18 (1025)
Water pump type Centrifugal
Fan diameter, including blades, mm (in.) 711 (28)
Fan, kWm (HP) 12.0 (16.1)
Max. restriction of cooling air, intake and
discharge side of radiator, kPa (in. H
2
O)
0.12 (0.5)
Operation Requirements
Air Requirements 60 Hz
Radiator-cooled cooling air,
m
3
/min. (scfm) 
290 (10,241)
Combustion air, m
3
/min. (cfm) 6.9 (244)
Heat rejected to ambient air:
Engine, kW (Btu/min.) 30 (1708)
Alternator, kW (Btu/min.) 8 (455)
 Air density = 1.20 kg/m
3
(0.075 lbm/ft
3
)
Fuel Consumption 
60 Hz
Natural Gas, m
3
/hr. (cfh) at % load Standby Ratings
100% 41.7 (1473)
75% 34.7 (1224)
50% 26.8 (946)
25% 17.7 (625)
0% 8.3 (292)
LP Gas, m
3
/hr. (cfh) at % load Standby Ratings
100% 18.8 (664)
75% 15.1 (532)
50% 11.0 (388)
25% 6.1 (216)
0% 3.4 (121)
 Nominal fuel rating: Natural gas, 37 MJ/m
3
(1000 Btu/ft.
3
)
LP vapor, 93 MJ/m
3
(2500 Btu/ft.
3
)
LP vapor conversion factors:
8.58 ft.
3
= 1 lb.
0.535 m
3
= 1 kg.
36.39 ft.
3
= 1 gal.
Controllers
APM402 Controller
Provides advanced control, system monitoring, and system diagnostics
for optimum performance and compatibility.
 Digital display and menu control provide easy local data access
 Measurements are selectable in metric or English units
 Remote communication thru a PC via network or
serial configuration
 Controller supports Modbus protocol
 Integrated hybrid voltage regulator with ±0.5% regulation
 Built-in alternator thermal overload protection
 NFPA 110 Level 1 capability
Refer to G6-161 for additional controller features and accessories.
Sound Enclosure
 Sound level (8 point logarithmic average) at 7 m (23 ft.) with full load:
69 dB(A).
 Sound level compared to competitor ratings with no load: 68 dB(A).*
 Sound attenuating enclosure uses acoustic insulation that meets
UL 94 HF1 flammability classification and repels moisture absorption.
 Vertical air inlet and outlet discharge with 90 degree bends to redirect
air and reduce noise.
 Internal-mounted critical silencer and flexible exhaust connector.
 Skid-mounted, steel (standard) or aluminum (optional) construction
with hinged doors.
 Fade-, scratch-, and corrosion-resistant Kohler Cashmere Power
Armor textured e-coat paint.
 Lockable, flush-mounted door latches.
 Certified to withstand 299 kph (186 mph) wind load rating (aluminum
enclosures only).
* Lowest of 8 points measured around the generator. Sound levels at
other points around generator may be higher depending on installation
parameters.