Using splash lubrication requires critical maintenance for the engine oil level. Large 286CC Displacement - Most generator manufacturers use a 286 CC displacement engine to deliver 5 KW . Polar derated the 286 CC engine to deliver a continuously rated 3.5 KW in order to extend engine life. Engine duration is important for sets operating on propane and natural gas, because these fuels burn at higher temperatures, and can burn the exhaust valves. Low Vibration - Kawasaki has incorporated a unique reciprocating balancer within its engine design.
Vibration causes noise and can adversely affect electronic assemblies located near the generator.
Kawasaki's Model 290 produces amazingly little vibration and noise. The alternator is designed to last a lifetime. Polar has taken every step to minimize corrosion and electrolysis within the alternator. The alternator rotor is dynamically balanced so there are no radial nor thrust loads on the bearings. The engine is a heavy-duty industrial type.