91301-ZY3-003 Honda O-RING (66.4X3.1) (Honda Code 6994511).

Generator and Load Compatibility
The generator must be fully compatible with the rated voltage, phase, and frequency of the connected electrical loads. The generator, connected electrical devices, or both, can be damaged if voltage, phase, and frequency are not compatible.Note: This manual assumes that the generator set has been properly selected, installed, and interconnected by a competent, qualified electrician or installation contractor. Once the installation is complete, do nothing that may result in non-compatibility between the generator and connected electrical loads.Three-Phase Load Imbalance Limits
For three-phase units the maximum load imbalance between phases cannot exceed 25% of rated load (current).Ambient Condition Derate
The maximum ambient temperature for the generator is indicated on the unit data label. De-rate values for ambient temperature more than that indicated on the data label, and altitude, may apply depending on the engine and kW rating of the unit. Consult an authorized service dealer for any de-rate values applicable to this specific generator at its installed locationEngine/Generator Protective Devices
The generator set may be required to operate for long periods of time without an operator on hand to monitor conditions such as coolant temperature, oil pressure, voltage, frequency. For this reason, the generator set has numerous sensors to provide the control panel with the information it needs to protect both the engine and generator. The control panel is designed to shut down the engine if potentially damaging conditions occur. These conditions can include low oil pressure, high coolant temperature, low coolant level, engine over-speed, over or under voltage, over or under frequency, and so on. These settings are configured at the factory and can be changed/adjusted by an Authorized Service Technician if required.Note: Engine/generator protective devices are only mentioned here for the owner/operator general information. For details, consult the applicable control panel technical manual. The list below is not all inclusive.Coolant Temperature Sensor
The control panel automatically shuts down the engine if the engine coolant temperature rises above a safe level.Low Coolant Level Sensor
When the engine coolant level drops below the level of the low coolant temperature sensor, it is possible for the engine to overheat without automatic shutdown. To prevent such overheating, the engine has a low coolant level sensor. If the level of engine coolant drops below the level of the low coolant level sensor, the control panel will shut down the engineOil Pressure Sensor
This sensor monitors engine oil pressure. If oil pressure drops below a safe level, the control system automatically shuts down the engine.Overspeed Shutdown
A speed circuit controls engine cranking, startup, operation, and shutdown. Engine speed signals are delivered to the control panel whenever the unit is running. Should the engine overspeed above a safe, preset value, the control panel initiates an automatic engine shutdown.Overcrank Shutdown
After a pre-specified duration of cranking, this function ends the cranking if the engine has failed to start. The default settings are:
The unit will attempt to start (crank) three times.
Each crank cycle lasts either 7 seconds, followed by a 7 second rest (to cool the starter).
After three starting attempts the unit will shut down.RPM Sensor Loss Shutdown
If the speed signal to the control panel is lost, engine shutdown will occur.Low Fuel Pressure Warning
Gaseous units are equipped with a low fuel pressure warning switch which will trigger a warning alarm if the fuel pressure drops below a minimum setting.Fuel System
This generator set is equipped with the following fuel system:
Natural Gas (NG) fuel systemNatural Gas Fuel System
Natural gas is supplied by a local utility in its vapor state through in ground pipingSpecifications
Generator
Refer to the data plate on the generator for rated watts, amperes, frequency, voltage, phase, and other important information.Engine Oil Recommendations
The engine has been filled with factory engine oil of a grade recommended by the engine supplier as follows:
Gaseous Engines: 14.2L displacement - SAE 15W-40
Gaseous Engines: 21.9L displacement - SAE 15W-40The manufacturer recommends an initial oil and filter change after the first 50 hours (or first 3 months) of service operation. Use a high-quality detergent oil with an appropriate classification and viscosity for the engine type and ambient temperature conditions. Consult your authorized servicing dealer for oil recommendations. Synthetic oils meeting the same service category and viscosity requirements for the application may be usedCoolant
Use only deionized or distilled water and Ethylene glycol antifreeze (Propylene glycol can also be used but do not mix with Ethylene glycol). When adding coolant, always add the recommended 50-50 mixture.
Personal injury can result from hot coolant, steam, and alkali.At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.Remove cooling system pressure cap slowly to relieve pressure only when engine is stopped and allow sufficient time for the cooling system to cool.Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.
Starting Aids (If Equipped)
One or more of the following starting aids may be provided to ensure quicker, easier starts under varying climatic conditions:
Engine coolant heater
Engine oil heater
Battery warmerEngine Coolant Heater
Heats the engine coolant when the unit is not operating. This action keeps the engine warm even in cold weather, helping to ensure quicker starts. Powered by a circuit normally fed by the utility power supply.Engine Oil Sump Heater
Keeps the oil in the sump heated to allow easier starting and faster engine warm-up. Powered by a circuit normally fed by the utility power supply.Battery Warmer
Keeps the battery warm so it can provide full cranking current when starting in cold conditions. Powered by a circuit normally fed by the utility power supply.