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Kohler 70RFZ Generator Set

The Kohler 70RFZ is a 50 kW (63 kVA) Natural Gas standby generator set powered by a Ford LSG-875 engine. It is available at 110/220 V, 110/190 V, 220/380 V, 230/400 V, 240/416 V and 120/208 V, 3-phase, 50 Hz and rated 190 A. It holds about 8.5 L (2.2 gal) of oil and 26.1 L (6.9 gal) of coolant, with a maximum ambient rating of 40 °C. Starting uses 1 battery rated 630 CCA at 12 V. The set measures 2242×864×1108 mm (88.3×34.0×43.6 in) and weighs about 950 kg (2094 lb). The same LSG-875 engine also powers generator sets from Ford, Olympian and Spectrum.

50 kW
Standby
7.538 L
Displacement
8.5 L
Oil capacity
1
Document types

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Compare with other 50–55 kW Natural Gas generators →

Specifications

FuelNatural Gas
Frequency50.0 Hz
Standby power50 kW
Standby kVA63
Prime power46 kW
Oil capacity8.5 L
Alternator4S7 (4-pole, Class H insulation)
Voltage options110/220 V, 110/190 V, 220/380 V, 230/400 V, 240/416 V, 120/208 V
Phase3
Rated current190 A
Power factor0.8
Battery cranking630 CCA
Battery voltage12 V
Battery quantity1
Coolant capacity26.1 L
Max ambient40 °C
Dimensions (L×W×H)2242×864×1108 mm
Dry weight950 kg

Engine

Ford LSG-875
Oil capacity7.6 L
Coolant capacity15.1 L
Displacement7.538 L
AspirationNatural Aspiration
Rated speed1800 rpm

Same engine, other brands

3 brands

The Ford LSG-875 in this set also powers 6 generator sets sold under 3 other brands. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.

BrandModels
FordENA, ENB
OlympianG60F1, G75F1
Spectrum50GS50, 50GS60

Maintenance & consumables

for the Ford LSG-875
ItemSpecCapacityPart #Interval
Air filter—69 hr
Fuel filter—
Oil filterCartridge×1—69 hr
Battery—
Belt—69 hr
Coolant28.8—
Oil9.0—
Spark plug—69 hr

Common questions

What is the power rating of the Kohler 70RFZ?

The Kohler 70RFZ is rated 50 kW standby (63.0 kVA).

What engine is in the Kohler 70RFZ?

The Kohler 70RFZ is powered by the Ford LSG-875 engine.

What kind of fuel does the Kohler 70RFZ run on?

The Kohler 70RFZ runs on Natural Gas.

How much oil does the Kohler 70RFZ take?

The Ford LSG-875 engine in the Kohler 70RFZ has an oil capacity of 7.6 liters.

What is the cooling system capacity of the Kohler 70RFZ?

The Kohler 70RFZ cooling system holds 26.1 liters (6.9 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.

What is the continuous rating of the Kohler 70RFZ?

The Kohler 70RFZ is rated 46 kW prime (58 kVA), against 50 kW standby.

What is the dry weight of the Kohler 70RFZ?

The Kohler 70RFZ has a dry weight of 950 kg (2094 lb).

What voltage does the Kohler 70RFZ produce?

The Kohler 70RFZ is offered in 110/220 V, 110/190 V, 220/380 V, 230/400 V, 240/416 V, 120/208 V, 3-phase.

How many cold cranking amps does the Kohler 70RFZ require?

The Kohler 70RFZ uses 1 battery, 12 V each, 630 CCA, per the manufacturer specification sheet.

What alternator does the Kohler 70RFZ use?

The Kohler 70RFZ uses a 4S7 alternator. It has 4 poles. Insulation class H.

Parts

51
Part #DescriptionQtySystem
241481Switch, high temperature 268298 Sender, water temperature1Sensor Amazon eBay
255264Switch, low water temperature1Sensor Amazon eBay
255913Switch, pressure1Sensor Amazon eBay
271425Switch, anticipatory low oil pressure1Sensor Amazon eBay $100.79 NAPA $182.69
276206Hose, molded1Hose Amazon eBay
952-696Gasket1Gasket Amazon eBay
X-309-16Clamp, hose2Hose Amazon eBay
X-380-1Connector, 1/8NPT x 1/4 in. ID hose1Hose Amazon eBay
X-386-56Fuel line, flexible1Hose Amazon eBay
X-577-6Hose, 5/8 ID x 112Hose Amazon eBay
X-797-1Hose, flex1Hose Amazon eBay
X-797-11Hose, flex1Hose Amazon eBay
X-797-2Hose, flex1Hose Amazon eBay
276378Installed Block Heater Kit / Interim Kit (120V)Service part / kit Amazon eBay
276379Installed Block Heater Kit / Interim Kit (240V)Service part / kit Amazon eBay $104.79
276691Block Heater1Service part / kit Amazon eBay
276692Block Heater1Service part / kit Amazon eBay
285054Silencer Residential R-M (Table 3)1Service part / kit Amazon eBay $79.70
285086Silencer Industrial I-N (Table 3)1Service part / kit Amazon eBay
285127Silencer Industrial I-N (Table 1)1Service part / kit Amazon eBay
285775Silencer Residential R-M (Table 1)1Service part / kit Amazon eBay
286788Silencer Critical C-BM (Table 1)1Service part / kit Amazon eBay $129.99
290483Silencer Residential R-BM (Table 1)1Service part / kit Amazon eBay
290484Silencer Residential R-N (Table 1)1Service part / kit Amazon eBay
290485Silencer Residential R-BM (Table 3)1Service part / kit Amazon eBay
290486Silencer Residential R-N (Table 3)1Service part / kit Amazon eBay
290489Silencer Critical C-M (Table 3)1Service part / kit Amazon eBay
290490Silencer Critical C-N (Table 3)1Service part / kit Amazon eBay
290495Silencer Critical C-M (Table 1)1Service part / kit Amazon eBay
290496Silencer Critical C-N (Table 1)1Service part / kit Amazon eBay
326174Installed Block Heater Kit (120V)Service part / kit Amazon eBay
326175Installed Block Heater Kit (240V)Service part / kit Amazon eBay
326234Block HeaterService part / kit Amazon eBay
326235Block HeaterService part / kit Amazon eBay
326279Changeover KitService part / kit Amazon eBay
326280Changeover KitService part / kit Amazon eBay
952-048Pipe Plug 3/8 - 18 x .42 socket hex1Service part / kit Amazon eBay
952-234Bolt - 5/16 - 18 x .8751Service part / kit Amazon eBay
952-486Dowel - 1/2 x 1.001Service part / kit Amazon eBay
952-539Bolt - 5/16 - 18 x 2.001Service part / kit Amazon eBay
952-553Plug - Oil Passage In Block - 1/4 NPT1Service part / kit Amazon eBay
952-554Plug - Water Drain - 1/4 NPT - Brass1Service part / kit Amazon eBay
952-556Dowel1Service part / kit Amazon eBay
952-561Plug - .060 O/S1Service part / kit Amazon eBay
952-563Plug - 5/8 - 181Service part / kit Amazon eBay
952-569Plug - Camshaft Rear Bearing - Standard1Service part / kit Amazon eBay
952-570Plug - Camshaft Rear Bearing - .060 O/S1Service part / kit Amazon eBay
952-577Pointer1Service part / kit Amazon eBay
952-596Plug - 1.50 Cup1Service part / kit Amazon eBay
952-688Cover1Service part / kit Amazon eBay
952-689Block1Service part / kit Amazon eBay

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Available documents

Spec sheet — Kohler-70RZ-spec-sheet (Kohler)

This page was generated from the 1 manufacturer document above by automated extraction; every figure shown is copied from one of them. How the data is compiled.