Engine features: Certified by the Environmental Protection Agency (EPA) to conform to Tier III marine auxiliary standards. Closed cooling sytem Heat exchanger Oil drain valve Generator features: Remote start 12-pin connector Voltage regulation of ±1.0% Rotor and stator are coated with a high-bond epoxy varnish. Varnish helps prevent corrosion in high-humidity areas. Copper windings ensure minimal heat buildup. Insulation meets NEMA standards for class H insulation. Direct connected to the engine, the generator has sealed precision ball bearings with a precision-machined steel sleeve in the end bracket to prevent shaft misalignment and extend bearing life.