•  A silent timing chain has been adopted to reduce chain operating noise caused by the engagement of each sprocket.

•  The timing chain tension is maintained constantly at all times by a chain adjuster.

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•  An oil pressure type chain adjuster has been adopted.

•  The chain adjuster consists of a ratchet and rack that fixes the piston movement, a piston and spring that pushes the tensioner arm, and a check ball that maintains pressure on the tensioner arm.

•  Panel springs on the back of the check ball and adjuster prevent oil in the adjuster from draining. Thus the chain adjuster can maintain the force that pushes the piston against the tensioner arm, even if the engine is not operated for a long period of time.