The amount of maintenance required for a generator depends on fuel type, age, use level and a host of other factors. Talk to one of our representatives before you buy, and we will provide you with full information on future maintenance requirements and cost. In addition, we offer a 100% quality assurance guarantee on all units sold. You’ll get the full manufacturer warranty on new products, and a 30-day warranty on used inventory. For rebuilt equipment we provide a 6-month warranty, (excluding inventory marked as-is).