Generac Power Systems 36 kW

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Owner’s Manual

For

Spark-Ignited Stationary Emergency Generators

Residential and Commercial

This manual should remain with the unit.

This manual must be used in conjunction

with the appropriate installation manual.

*

NOT INTENDED FOR USE IN CRITICAL

LIFE SUPPORT APPLICATIONS.

*

ONLY QUALIFIED ELECTRICIANS OR

CONTRACTORS SHOULD ATTEMPT

INSTALLATION!

*

DEADLY EXHAUST FUMES! OUTDOOR

INSTALLATION ONLY!

22 kW 2.4L

25 kW 1.5L

27 kW 2.4L

30 kW 1.5L

32 kW 2.4L

36 kW 2.4L

38 kW 2.4L

45 kW 2.4L

48 kW 5.4L

60 kW 2.4L

Para español , visita:

http://www.generac.com/service‐support/product‐support‐lookup

Pour le français, visiter : http://www.generac.com/service‐support/product‐support‐lookup

Table of Contents

Questions and Answers:

L
Lisa WilliamsAug 4, 2025
Why Generac Power Systems 36 kW engine will not crank?
- D
  Debra WilliamsAug 4, 2025
  If your Generac Power Systems Portable Generator engine won't crank, here's what might be happening: * A blown fuse could be the culprit. Replace the 7.5 amp fuse in the generator control panel. If it blows again, there may be a short circuit that needs fixing. * Loose, corroded, or defective battery cables can also prevent cranking. Try tightening, cleaning, or replacing them as needed. * A defective starter contact or starter motor could also be the reason. Tighten, clean, or replace these components as necessary. * The battery might be dead. In this case, charge or replace the battery.
M
Meghan DelgadoAug 8, 2025
What to do if Generac Power Systems 36 kW Portable Generator unit shuts down during operation?
- K
  kim73Aug 8, 2025
  If your Generac Power Systems Portable Generator unit shuts down during operation, it could be due to several reasons: * **High Temperature:** Ensure there's enough ventilation around the intake, exhaust, and rear of the generator. If there are no obstructions, contact a dealer. * **Overload:** Clear the alarm, remove loads from the generator, put back in AUTO, and restart. * **RPM Sense Loss:** Clear the alarm, remove loads from the generator, put back in AUTO, and restart. If the problem continues, contact a dealer to check for fuel issues.
Y
ywilcoxAug 12, 2025
What to do if Generac Power Systems 36 kW engine cranks but will not start?
- L
  Leslie WoodAug 12, 2025
  If your Generac Power Systems Portable Generator engine cranks but won't start, consider these potential causes: * **Out of fuel:** Replenish the fuel supply and ensure the fuel valve is turned on. * **Open F1 7.5 amp fuse:** Replace the F1 7.5 amp fuse. If it blows again, there might be an issue requiring further inspection. * **Open F2 15 amp fuse:** Replace the F2 15 amp fuse. If it blows again, further inspection may be needed. * **No fuel supply:** Make sure the fuel supply is turned on.
S
Sara RichardsonAug 16, 2025
How to fix no AC output from Generac Power Systems Portable Generator?
- Y
  yhuffAug 16, 2025
  If your Generac Power Systems Portable Generator is not producing AC output, check if the main line circuit breaker is in the OFF (OPEN) position. If so, reset the circuit breaker to the ON (CLOSED) position.
R
Robin AndrewsAug 21, 2025
Why Generac Power Systems 36 kW Portable Generator unit consumes large amounts of oil?
- A
  Anita GordonAug 21, 2025
  If your Generac Power Systems Portable Generator unit consumes large amounts of oil, the following reasons are possible: * The engine is overfilled with oil. Adjust the oil to the correct level. * The oil type or viscosity is incorrect. Refer to the Engine Oil Recommendations. * There is a damaged gasket, seal, or hose. Check for oil leaks.
J
Jose HensleyAug 25, 2025
Why Generac Power Systems 36 kW engine starts hard and runs rough?
- W
  William SandersAug 26, 2025
  If your Generac Power Systems Portable Generator engine starts hard and runs rough, the air cleaner might be plugged or damaged. Inspect and replace the air cleaner if necessary.
B
Brian CruzAug 29, 2025
What to do if Generac Power Systems Portable Generator unit will not start in AUTO with utility loss?
- D
  dennis20Aug 30, 2025
  If your Generac Power Systems Portable Generator unit will not start in AUTO with utility loss, the following reasons are possible: * NOT ACTIVATED: Refer to activation section in Owner’s Manual. * LOW OIL PRESSURE: Check oil level. Add oil per Owner’s Manual. Contact servicing dealer if oil level is correct. * OVERCRANK: Clear alarm. Attempt to start the unit in MANUAL. If it does not start or starts and runs rough, contact servicing dealer. * OVERSPEED: Contact servicing dealer. * UNDER VOLTAGE: Contact servicing dealer. * UNDERSPEED: Contact servicing dealer. * MISWIRE: Contact servicing dealer. * OVERVOLTAGE: Contact servicing dealer.

Generac Power Systems 36 kW Specifications

General

Rated Power	36 kW
Frequency	60 Hz
Starting System	Electric Start
Voltage	120/240V
Transfer Switch Compatibility	Compatible with Generac automatic transfer switches

Summary

Section 1 Safety

1.2 Safety Information and General Hazards

Covers essential safety rules, precautions, and general hazards for operation and maintenance.

1.3 Specific Hazard Warnings

Details exhaust, electrical, fire, and explosion hazards to prevent injury or damage.

Section 2 Specifications

2.2 Technical Specifications Overview

Lists detailed technical specifications for various generator models.

Section 3 Activation and Startup

3.3 Unit Activation Process

3.5 Operational Checks and Testing

Outlines essential operational checks, electrical tests, and load testing procedures.

Section 4 Operation

4.1 Control Panel and Modes

4.3 AlarmWarning Conditions and Updates

4.4 Automatic Operation Sequence

Details the automatic sequence of operation during utility failure and restoration.

4.5 Manual Transfer Switch Operation

Provides instructions for manually operating the transfer switch to generator or utility power.

Section 6 Troubleshooting

6.1 Engine Troubleshooting

Lists common engine problems, their causes, and corrective actions.

6.2 Controller Troubleshooting

Lists controller alarms, problems, and the solutions for each.

6.3 Removal from Service and Storage

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