In an increasingly power-dependent world, reliable backup electricity is a non-negotiable requirement for businesses, institutions, and infrastructure. For those who have invested in an FG Wilson diesel generator, ensuring consistent performance isn’t just about proper installation — it’s also about effective long-term maintenance.
Whether your FG Wilson genset has been installed with the recommended 2-meter clearance, on a concrete slab, and connected via an automatic transfer switch, one key question remains: How do you protect your investment over time?
Routine Maintenance: The Backbone of Generator Longevity
According to best practices and manufacturer guidelines, an ongoing maintenance program is essential to keep your generator running efficiently. These tasks should always be performed by qualified technicians, and maintenance records should be securely stored for future reference.
Daily checks before startup, general cleanliness of the unit (especially around acoustic insulation and fuel lines), and ensuring that no flammable residues accumulate are all foundational steps. When it comes to deeper servicing, the following timelines are recommended:
Every 2 weeks: Start the generator for five minutes if it hasn’t been used.
Every month: Run the unit under 50% load for 1–2 hours if it hasn’t operated under load recently.
Every 12 months or 500 hours: Perform a full checkup including electrical connections, exhaust fittings, safety system tests, and battery vent cleaning.
Detailed engine service intervals — from air filter replacement every 500 hours to injector testing every 3,000 hours — are laid out in the comprehensive FG Wilson maintenance guide.
Explore the full FG Wilson generator product series at VoltGent for more technical specifications and professional insights.
Battery Care: A Silent Hero
The battery is the core of the generator’s start-up mechanism, and poor battery maintenance is one of the most common causes of generator failure. FG Wilson recommends checking battery electrolyte levels every 500 hours — or every 200 hours in high ambient temperatures. Proper cleaning using baking soda or ammonia solutions, tight terminal connections, and avoiding overfilling or using battery acid for topping up are crucial.
It’s also vital to store used batteries properly. Never burn or landfill old batteries, as they release toxic materials including sulfuric acid and lead.
Generator Usage: Avoiding Common Pitfalls
A commonly overlooked issue is running diesel generators at low load for extended periods, which can cause internal glazing and premature engine wear. To prevent this, regular load testing is advised. Similarly, fuel tank water drainage (including double-walled tanks) must be performed monthly to prevent contamination.
Preventive maintenance doesn’t stop at the engine. Alternators, belts, hoses, and electrical systems must also be periodically checked. While the alternator requires no fixed service schedule, it should be visually inspected and cleaned regularly.
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Final Thought
A well-maintained FG Wilson generator is not just a backup — it’s a business continuity asset. By following a structured preventive maintenance plan and working with certified technicians, you can ensure that your power supply remains stable when it matters most.
