LUBRICATION SYSTEM


  1. CONSTRUCTION


    1. Oil Pump Assembly


      1. The trochoidal type oil pump assembly is driven by the crankshaft, and fits compactly inside the oil pan.

      2. A relief valve has been provided on the oil pump assembly, thus, any excessive pressure rises are restrained and the friction loss is reduced.

        A004V0KE02
        Text in Illustration
        *1 Crankshaft *2 Oil Pump Assembly
        *3 Relief Valve - -

    2. Oil Nozzle Sub-assembly


      1. Oil nozzle sub-assemblies for cooling and lubricating the pistons have been provided in the cylinder block sub-assembly.

      2. These oil nozzle sub-assemblies contain a check ball to prevent oil from being fed when the oil pressure is low. This prevents the overall oil pressure in the engine from dropping.

        A004V4ZE04
        Text in Illustration
        *1 Cylinder Block Sub-assembly *2 Oil Nozzle Sub-assembly
        *3 Check Ball - -
        *a Oil Nozzle Sub-assembly Cross Section - -
        B0022S8 Oil - -

    3. Oil Filter Element


      1. A replaceable oil filter element is used. The oil filter element uses a high-performance filter paper to improve filtration performance. It is also combustible for environmental protection.

        A004UYSE03
        Text in Illustration
        *1 Oil Filter Case *2 Oil Filter Element
        *3 O-ring *4 Filter Cap Sub-assembly

        Tech Tips

        The engine oil maintenance interval for a model that has an oil filter with a replaceable oil filter element is the same as that for a conventional model.