Practice question

What is the primary function of the automatic cam chain tensioner in an overhead camshaft (OHC) motorcycle engine?

To maintain constant, proper tension on the timing chain to prevent it from skipping teeth and to reduce mechanical noise.
To adjust the valve clearance automatically as the engine components heat up.
To link the crankshaft directly to the transmission clutch assembly.
To regulate the oil pressure flowing to the cylinder head assembly.

Answer: A — To maintain constant, proper tension on the timing chain to prevent it from skipping teeth and to reduce mechanical noise.

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