What are the guidelines for storing an RV with a built-in generator to keep it in good condition?

Storing an RV with a built-in generator requires specific care to ensure this critical and expensive component remains reliable and safe. Proper procedures go beyond simply parking the unit and involve fuel management, system preparation, and environmental considerations. Following manufacturer guidelines is paramount, but these general principles will help you establish a solid storage routine.

Pre-Storage Fuel System Preparation

A generator's fuel system is vulnerable during periods of inactivity. Stagnant fuel can degrade, leading to gum and varnish deposits that clog carburetors, fuel injectors, and lines. The most cited recommendation from generator manufacturers and industry technicians is to use a fuel stabilizer. Add a high-quality stabilizer to the generator's fuel tank, then run the generator under load for at least 30 minutes to circulate the treated fuel throughout the entire system. For extended storage exceeding six months, some experts and manuals advise running the generator until the fuel tank is completely empty, but this should only be done after consulting your specific owner's manual, as some fuel-injected models may have different requirements.

Battery Maintenance for Reliable Starts

The generator's starting battery is often overlooked. A dead or weak battery will prevent the generator from operating when needed. Before storage, ensure the battery is fully charged. For long-term storage, the best practice is to disconnect the negative battery cable to prevent parasitic drain from the RV's systems. Alternatively, connect the battery to a quality maintenance charger or smart battery tender designed for the battery type (flooded, AGM, or lithium). This device will keep the battery at optimal charge without overcharging it.

Running Schedule During Storage

Periodic exercise runs are essential for generator health. Industry guidelines generally recommend running the generator under a significant load (at least 50% of its rated capacity) for one to two hours every month. This process lubricates internal components, prevents moisture buildup, burns off accumulated carbon, and ensures the system remains operational. Always perform this exercise in a well-ventilated outdoor area, never in an enclosed space, due to the risk of carbon monoxide poisoning.

Climate and Environmental Protection

Where you store your RV significantly impacts generator longevity. The ideal environment is a cool, dry place.

• Indoor or Covered Storage: This offers the best protection from rain, snow, sun, and extreme temperature swings, which can accelerate wear on seals and external components.
• Outdoor Storage: If outdoor storage is your only option, consider using a breathable, waterproof RV cover. Ensure the generator exhaust outlet and air intake are not blocked by the cover or any other object.

Regardless of location, protect the generator from rodents. These pests can chew through wiring, air filters, and insulation. Placing rodent deterrents around and inside the generator compartment (following safety instructions) is a prudent step.

Comprehensive Pre-Storage Checklist

1. Consult Your Manual: Always reference the generator and RV owner's manuals for model-specific instructions.
2. Stabilize Fuel: Add stabilizer and run the generator to circulate it.
3. Check Oil: Change the oil and filter if the service interval is near. Running with fresh oil prevents acidic byproducts from corroding engine internals.
4. Secure the Battery: Charge fully, then disconnect or connect to a maintainer.
5. Exercise Schedule: Mark your calendar for monthly loaded run times.
6. Inspect Seals and Inlets: Ensure the compartment door seals are intact and the air intake and exhaust are clear of debris.
7. Review Storage Facility Rules: Confirm that your storage facility allows for the periodic running of generators on-site, as many have strict "no operation" policies within enclosed units.

Insurance and Facility Considerations

When selecting a storage facility for an RV with a generator, discuss your maintenance plans. Some facilities may have designated areas or specific rules for running equipment. From an insurance perspective, properly maintaining your generator as part of your overall RV care can be viewed favorably. Negligence, such as failing to winterize or secure the unit, could potentially affect a claim. Always confirm your policy's requirements for stored vehicles with your insurance provider.

Adhering to these guidelines for fuel, battery, exercise runs, and environment will greatly increase the likelihood that your built-in generator will start immediately and run smoothly when your next adventure begins. This proactive maintenance protects your investment and ensures peace of mind.