ENGINE UNIT


  1. CONSTRUCTION


    1. A crankshaft made of forged steel, which excels in rigidity and wear resistance, is used.

    2. The crankshaft has 4 main bearing journals and 5 balance weights.

      B00723AC04
      *1 No. 1 Journal *2 No. 2 Journal
      *3 No. 3 Journal *4 No. 4 Journal
      *5 Balance Weight - -
      B007279 Engine Front - -

    3. The crankshaft main bearings are made of aluminum alloy.

    4. The crankshaft bearings are reduced in width to reduce friction. The bearing lining surface is coated with resin to improve wear and seizure resistance.

    5. The upper crankshaft bearings have an oil groove around the inside circumference.

    6. The crankshaft bearing caps are tightened using 4 plastic region tightening bolts for each journal. In addition, each cap is tightened laterally to improve its reliability.

      B0072K2C04
      *1 Plastic Region Tightening Bolt *2 Crankshaft Bearing Cap
      *3 Seal Washer *4 Upper Crankshaft Bearing
      *5 Lower Crankshaft Bearing - -
      *a Oil Groove - -