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Valve Springs

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  1. Measure valve spring installed height from top of spring seat to underside of spring retainer. Ensure installed height is within specification. See VALVES & VALVE SPRINGS  table under ENGINE SPECIFICATIONS.
  2. If installed height is not within specification, a .03" (.8 mm) shim can be installed between cylinder head and valve spring to obtain correct height. Inspect valve spring free length and pressure. Replace valve spring if free length and pressure are not within specification. See VALVES & VALVE SPRINGS  table.
CAUTION: DO NOT install valve spring spacers unless necessary. Using more spacers than required can result in spring breakage or worn camshaft lobes.
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