4000i Dual Fuel Generator 4000i Dual Fuel Generator

We will have this ready by the end of 4th quarter 2022. Our generator will work with any auto start feature that has a dry pin connection for starting the generator. The pin out chart within the installation manual will show you which wire to connect your AutoStart system to. We cannot advise as to specific AutoStart systems, as there are too many, but generally speaking this is the process to connect.

ABSOLUTELY NOT!!! Failure to adhere to this requirement could result in death.

Absolutely exhaust gas is deadly! Do not operate the generator with a faulty exhaust system. Your tailpipe MUST ALWAYS extend beyond the bottom edge of the vehicle sidewall.

Make sure you inspect the unit for damage, paying particular attention to the exhaust pipe that is extending beyond the bottom edge of the vehicle sidewall. If this is damaged be sure to seek service immediately, as this damage could result in inhalation of exhaust gas which is deadly.

NO! Do not store anything inside the generator enclosure. This area must always be kept free from debris.

NO! You must perform on maintenance and service while the generator is off, and the negative battery cable is disconnected. Moving parts can cause injury and or death, and live wires could cause fatal electrocution.

No! Backfeed to utility systems can cause serious risks to life or property. Never connect the generator to an external electrical system except through an approved transfer switch.

RVMP advises against and does not like to endorse any kits for the following reasons and will impact the FLEX POWER™ Limited Warranty:

1. Back Pressure: this may increase the back pressure on the engine and reduce engine performance, or cause the engine to fail to meet regulated exhaust standards.
2. Heat: could cause burns to anybody coming in contact.
3. Fit: to be effective these connections must be gas-tight. This cannot be guaranteed after each installation.
4. Direct of Exhaust: because these units are exhausting along the roof line, there is a higher probability that roof mounted vents and air-conditioners could intake the exhaust and circulate throughout the unit. Circulation of exhaust inside the unit could result in carbon monoxide poisoning.
5. Weight: improper installation can result in reasonable stress on the existing exhaust system. The factory installed exhaust is not designed to carry this additional weight, and as a result any damage to the exhaust system could be detrimental to the life and well-being of the occupants of the vehicle.

Yes, all of the following name brand parts are available for Flex Power generators:

1. Spark Plug: 100729763
2. Air Filter: 100730618
3. Carburetor: 100753507
4. Fuel Pump: 100729673
5. Gas Regulator: 100729675
6. Electric Fan: 100729684
7. Hour Meter/Control Gauge: 100729698
8. Power Regulator: 100729714

Yes, this is good practice and will keep your generator running optimally.

Yes, following these guidelines in the RVMP Owner’s Manual, will decrease oil consumption and improve long-term power characteristics. The braking process usually involves running the generator at about 50% load for two hours, then 75% load for two hours, then letting it cool down and starting over again. This process is good practice and will pay dividends for the reliability of your generator.

Yes, it is recommended to run your generator a minimum of 50% capacity for two hours once every month. This prevents the fuel from coming up with varnish, fuel varnishing results in hard starting and surging. Monthly exercising of your unit will keep your generator running well.

An amp is the amount of current flowing in a wire or a conductor. Typically RVs have two different categories of amperage: 30 amp or 50 amp. Make sure you know the difference.

A volt is the amount of electrical potential present, specifically for an RV this is 120 VAC when running on “shore power” (your generator is plugged into the power grid) or when running on generator power. When operating solely on batteries the voltage is 12 VDC.

Wattage is the representation of power. You calculate wattage by multiplying voltage x amps: 120 VAC x 30 AMPS = 3,600 WATTS. If you look at each item running in your vehicle you can calculate the wattage required versus your wattage available to compare demand on system and capacities.

Today all RVs are wired for either 30 or 50 AMP shore power. A 30 AMP electrical cable cored is rated at 120 VAC, and the 50 AMP is rated at 240 VAC. A quick analysis shows a 50 AMP shore cord has close to three times the power potential than a 30 AMP system.

The largest single demand on any generator will be powering the cooling systems. This could be one, two, or even three roof mounted air conditioners. Also, the battery charger demands significant power output from your generator. Understanding and managing these loads is very important to optimizing generator performance.

Common loads on the generator in an RV:

• Air Conditioner: 1,200-2,400 W and 7.5-15 AMPS
• Battery Charger: 3000 W and 7-24 AMPS
• Blender: 450-700 W and 3-6 AMPS
• Entertainment System: 85-120 W and 1-3 AMPS
• Coffee Pot: 1,000-1,300 W and 8-11 AMPS
• Laptop: 20-100 W and .25-1 AMPS
• Microwave: 800-1,600 W and 7-14 AMPS
• Refrigerator: 500-1,200 W and 4-8 AMPS
• Toaster: 1,000-1,500 W and 7-12 AMPS

When an air conditioner is running normally pressure is created in the refrigerant. When shut off the system requires at least five minutes for the pressure to equalize. If the air conditioner is started before the pressure equalizes this is called “short-cycling.” This can cause the AC to trip the circuit breaker, overload the generator, and make the AC shut off due to thermal overload. The only way to address this is to allow sufficient time for the AC to equalize pressure and temperature. To prevent this make sure the AC is not blowing directly on the thermostat.

Both can cause the generator to lose power and performance. Altitude results in a power decrease of approximately 3% for every 1,000 feet above 500 feet. Temperature results in a 1% loss of operations for each 10℉ above 80℉. In some cases, it may be required to manually adjust the carburetor to overcome some of these performance issues. Please see the Owner’s Manual.

Yes, this allows for variable speed and a more controlled and pure electricity output.

Hours of operation, voltage, and various codes. ex P25 oil change at 25 hours. P50 Clean air filter @ 50 hours, P100 replace the fuel and air filters and change engine oil.

The overall assembly. The engine is 30% smaller than Onan with improved output.

Yes. It will shut down and/or prevent the unit from starting.

In the event your generator is becoming overloaded, the indicator light will begin to flash. If the generator is overloaded and shuts down, simply unplug one or more devices, and push the “restart” button to power the generator back up. Yes. Under normal operating conditions 90F and below 2000 feet above sea level based on user’s current configuration.

The unit is ready to output power and the unit is operating normally.

Smaller engine and improved efficiency.

This is a proprietary feature that allows for seamless operations between propane and gasoline. It also allows for the implementation of a safety feature that allows for the shutdown of fuel in the event of a fire. (Onan does not have this feature.)