HomeCummins/OnanCummins/Onan CSG-649

Cummins/Onan CSG-649 Generator Set

The Cummins/Onan CSG-649 is a 30 kW (38 kVA) standby generator set powered by a Cummins/Onan Modified Ford In-line 6 CSG-649 engine. It is available at 12 V, 3-phase and 50 Hz. It holds about 7 L (1.8 gal) of oil and 19 L (5.0 gal) of coolant. Starting uses group-60 battery at 12 V.

30 kW
Standby
7.0 L
Oil capacity
0
Document types

How to read your Cummins/Onan serial & model number →

Specifications

Frequency50.0 Hz
Standby power30 kW
Standby kVA38
Oil capacity7.0 L
Voltage options12 V
Phase3-Phase,3-Phase
Power factor[0.8, 0.8]
Battery group60
Battery voltage12 V
Coolant capacity19 L

Engine

Cummins/Onan Modified Ford In-line 6 CSG-649
Oil capacity6.6 L
Coolant capacity22.0 L

Maintenance & consumables

for the Cummins/Onan Modified Ford In-line 6 CSG-649
ItemSpecCapacityPart #Interval
Air filter200 hr find
Fuel filter100 hr find
Oil filter100 hr find
Belt10 hr find
Coolant19.0300 hr
Coolant filter200 hr find
Oil7.0200 hr

Common questions

What is the power rating of the Cummins/Onan CSG-649?

The Cummins/Onan CSG-649 is rated 30 kW standby (38.0 kVA).

What engine does the Cummins/Onan CSG-649 use?

The Cummins/Onan CSG-649 is powered by the Cummins/Onan Modified Ford In-line 6 CSG-649 engine.

What is the oil capacity of the Cummins/Onan CSG-649?

The Cummins/Onan Modified Ford In-line 6 CSG-649 engine in the Cummins/Onan CSG-649 has an oil capacity of 6.6 liters.

Troubleshooting

16

Symptoms & remedies

SymptomRemedy
Green RUN lamp lights following engine Startup.Indicates all engine systems are normal. No corrective action required.
PRE HI ENGINE TEMP lamp lights. Engine continues to operate.A. Reduce load if possible by turning off non-critical loads. b. Check air inlets and outlets and remove any obstructions to airflow. If engine can be stopped, follow procedure in step 3.
HI ENG TEMP lamp lights. Engine shuts down.A. Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary. b. Check for obstructions to cooling airflow and correct as necessary. c. Check for a slipping fan belt and tighten if loose. d. Reset control and restart after locating and correcting problem. Contact an authorized service center if none of the above.
PRELOOILPRES lamp lights. Engine continues to operate.A. Wait until next shutdown period and then follow step 5 procedure. b. If engine can be stopped, follow procedures in step 5.
LO OIL PRES lamp lights. Engine shuts down.A. Check oil level and filters. If oil system is OK but oil level is low, replenish. b. Reset control and restart. Contact an authorized service center if oil pressure is not in the range of 35 to 60 psi (241 to 414 kPa).
OVERGRANK lamp lights and engine stops cranking.A. Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required. b. Check for dirty fuel filter and replace if necessary (see MAINTENANCE section). c. Check for dirty or plugged air filter and replace if necessary (see MAINTENANCE section). d. Check ignition system (see MAINTENANCE). e. Reset the control and restart after correcting the problem. Contact an authorized service center for service if none of the above.
Engine runs and then shuts down, OVERSPEED lamp lights.Contact an authorized service center for service.
SWITCH OFF lamp flashes.Indicates Run/Stop/Remote switch is in the Stop position which will prevent automatic starting if an automatic transfer switch is used. Move the Run/Stop/Remote switch to the Remote position for automatic starting.
LO FUEL lamp lights. Engine continues to run.Check fuel supply and replenish as required.
LO FUEL lamp lights. Engine shuts down and LO OIL PRES lamp lights.A. Check fuel level and replenish as required. b. Contact an authorized service center for service.
LO ENG TEMP lamp lights. Set is in standby mode but is not operating.A. Coolant heater not connected to power supply. Check for blown fuse or disconnected heater cord and correct as required. b. Check for low coolant level and replenish if required. Look for possible coolant leakage points and repair as required. c. Contact an authorized service center if none of the above.
The FAULT 1 or FAULT 2 fault lamp lights.Engine shuts down immediately, engine runs for several seconds and then shuts down, or engine continues to run. a. The standard undesignated fault functions are programmed to shut down the set when a fault is sensed. Fault 1 is time delayed while Fault 2 is immediate. The nature of the fault is an optional selection that is determined when the set installation is designed. The undesignated fault functions may also be programmed for non-shutdown or non-time delay. b. Contact an authorized service center for service.
Fault lamp lights but no fault exists. Engine gauges show oil pressure, engine temperature, and frequency (speed) are within normal limits.The monitor board or a sensor may be at fault. Contact an authorized service center for service.
Engine starts from generator control panel but will not start automatically or from a remote panel.Remote circuit breaker is tripped. Reset breaker and restart. Contact an authorized service center if necessary.
Fault lamp turns on during operationFollow the procedures listed below to locate and correct the problem. For any symptom not listed, contact an authorized service center for assistance.
Line Circuit Breaker tripsLocate the source of the overload and correct as necessary. Manually reset the breaker to reconnect the load to the generator.

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

7
Part #DescriptionQtySystem
625-2712Customer Connections at the Engine Control Monitor BoardCustomer connections PartsGeek
928-0131CBatteryBattery PartsGeek
C4TZ-8A500-B5/8” cap, water pump bypass tube1Pump PartsGeek
539-0741c3AC CONTROL PANELService part / kit PartsGeek
5399-074102INDICATOR LAMPSService part / kit PartsGeek
539979005S/N 09592 need parts manualService part / kit PartsGeek
CSG-649I-6005-FCondition: Refurbished Inspection per Factory manual - Preventive WARRANTY 90 DAYS PARTS by Ford CSG-649 Gasoline EnginesService 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
Prime
Standby

Available documents

Service manual — 194-210 Ford CSG649 300CID Industrial Engine Service manual Apr1982 (archive.org)