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Kohler 25EFORZD Generator Set

The Kohler 25EFORZD is a 25 kW (31.3 kVA) Diesel standby generator set powered by a Yanmar 4TNV98 engine. It operates at 50 Hz. It holds about 10.2 L (2.7 gal) of oil and 15 L (4.0 gal) of coolant. The same 4TNV98 engine also powers generator sets from Himoinsa.

25 kW
Standby
3.319 L
Displacement
10.2 L
Oil capacity
3
Document types

How to read your Kohler serial & model number →

Specifications

FuelDiesel
Frequency50.0 Hz
Standby power25 kW
Standby kVA31
EmissionsTier 2
ControllerADC 2100
Oil capacity10.2 L

Engine

Yanmar 4TNV98
Oil capacity10.2 L
Coolant capacity15.0 L
Displacement3.319 L
Aspirationnaturally aspirated
Rated speed1800 rpm

Maintenance & consumables

for the Yanmar 4TNV98
ItemSpecCapacityPart #Interval
Coolant15.0 L
Oil10.2 L

Common questions

What is the power rating of the Kohler 25EFORZD?

The Kohler 25EFORZD is rated 25 kW standby (31.3 kVA).

What engine does the Kohler 25EFORZD use?

The Kohler 25EFORZD is powered by the Yanmar 4TNV98 engine.

What fuel does the Kohler 25EFORZD use?

The Kohler 25EFORZD runs on Diesel.

What is the oil capacity of the Kohler 25EFORZD?

The Yanmar 4TNV98 engine in the Kohler 25EFORZD has an oil capacity of 10.2 liters.

Parts

17
Part #DescriptionQtySystem
129900-32001PUMP ASSY, OIL1Pump PartsGeek FridayParts $60.50
129900-32030O-RING, P201Seal PartsGeek
129900-32040O-RING, P141Seal PartsGeek
129907-01331GASKET, HEAD1Gasket PartsGeek yemparts $55.88
129927-42140GASKET, PUMP OUTLET1Gasket PartsGeek
729595-51390FUEL INJECTION PUMP1Injector PartsGeek
729595-51391FUEL INJECTION PUMP1Injector PartsGeek
129900-01250PLUG, DISH TYPE 552Service part / kit PartsGeek
129900-02341BEARING ASSY, MAIN5Service part / kit PartsGeek woodline $51.08
129900-02410BUSH, CAMSHAFT1Service part / kit PartsGeek woodline $13.20
129900-02931BEARING ASSY, THRUST2Service part / kit PartsGeek woodline $17.82
129900-02941BEARING, THRUST 0.252Service part / kit PartsGeek
129927-01560BLOCK ASSY, CYLINDER1Service part / kit PartsGeek
129944-01500CASE, GEAR1Service part / kit PartsGeek
171051-01921PLUG, NPTF11Service part / kit PartsGeek
729900-02801BEARING, MAIN5Service part / kit PartsGeek woodline $54.05
DKA60DCWPFRLitho aux USA (08-06)Service part / kit PartsGeek

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.

Fuel consumption

RatingLoadL/hgal/h
25%3.60.96
50%5.51.46
75%7.51.99
100%9.92.69
Standby25%3.60.96
Standby50%5.51.46
Standby75%7.51.99
Standby100%9.92.69

Available documents

Brochure (Kohler)Spec sheet (Kohler)Installation manual — tt1364 (Kohler)

Other sets with this engine