What is the oil capacity of the Generac 4389?

Name: Generac 4389 Generator Set
Brand: Generac

The Generac GH-410,GT-990 engine in the Generac 4389 has an oil capacity of 1.5 liters.

Generac 4389 — Specs, Engine, Parts & Maintenance

Specifications

Oil capacity	1.5 L

Engine

Generac GH-410,GT-990

Oil capacity	1.5 L
Displacement	0.41 L
Rated speed	3600 rpm

Maintenance & consumables

for the Generac GH-410,GT-990

Item	Spec	Capacity	Part #
Air filter	Generac Part # 0C8127		0C8127	NAPA $24.03 Amazon
Air filter			—	find
Belt			—	find
Coolant			—
Fuel filter			—	find
Oil		1.5	—
Oil filter			—	find

Parts

Part #	Description	Qty	System
070185	Oil Filter	1	Oil filter	NAPA $3.59 Amazon
0C5969	Spark Tester		Spark plug	buy
0C8127	Air Filter	1	Air filter	NAPA $24.03 Amazon
4389-4758-4679	Static Rotor Amp Draw Test Results - Model A, B, C, D, E, F, G, H		Service part / kit	buy
4390-4760	Static Rotor Amp Draw Test Results - Model A, B, C, D, E, F, G, H		Service part / kit	buy
4456-4759	Static Rotor Amp Draw Test Results - Model A, B, C, D, E, F, G, H		Service part / kit	buy
4692	Static Rotor Amp Draw Test Results - Model A, B, C, D, E, F, G, H		Service part / kit	buy

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

Rating	Load	L/h

Prime	0%	105.0
Standby	0%	74.0

Available documents

BrochureService manualWiring diagram

Generac 4389 Generator Set