Service Manual (KLZ1000C) — page 281 of 762

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CRANKSHAFT/TRANSMISSION 9-17
Crankshaft and Connecting Rods

•○Install each connecting rod on its original crankpin.
  The connecting rod big end is bolted using the “plastic
    region fastening method.”
○This method precisely achieves the needed clamping
 force without exceeding it unnecessarily, allowing the
 use of thinner, lighter bolts further decreasing connecting
 rod weight.
○There are two types of the plastic region fastening. One is
 a bolt length measurement method and other is a rotation
 angle method. Observe one of the following two, but the
 bolt length measurement method is preferable because
 this is a more reliable way to tighten the big end nuts.
                         NOTICE
    The connecting rod bolts are designed to stretch
    when tightened. Never reuse the connecting rod
    bolts. See the table below for correct bolt and nut
    usage.

                         NOTICE
    Be careful not to overtighten the nuts.
    The bolts must be positioned on the seating surface
    correctly to prevent the bolt heads from hitting the
    crankcase.

(1) Bolt Length Measurement Method
• Be sure to clean the bolts, nuts, and connecting rods
  thoroughly with a high flash-point solvent, because the
  new connecting rods, bolts, and nuts are treated with an
  anti-rust solution.
                         WARNING
    Gasoline and low flash-point solvents can be
    flammable and/or explosive and cause severe
    burns. Clean the bolts, nuts, and connecting rods
    in a well-ventilated area, and take care that there
    are no sparks or flame anywhere near the working
    area; this includes any appliance with a pilot light.
    Do not use gasoline or a low flash-point solvent to
    clean them.

                         NOTICE
    Immediately dry the bolts and nuts with com-
    pressed air after cleaning.
    Clean and dry the bolts and nuts completely.