Practice question

Valve timing on a motorcycle engine refers mainly to:

  1. Only the free length of the valve springs after removal
  2. When intake and exhaust valves open and close relative to crankshaft/camshaft position
  3. Only the viscosity grade printed on the oil bottle
  4. Only throttle-cable outer sheath length at the grip

Answer: B — When intake and exhaust valves open and close relative to crankshaft/camshaft position

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