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Valve Guides

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  1. Valve guides must be reamed for an oversized valve if valve stem-to-guide oil clearance exceeds specification. Refer to CYLINDER HEAD  table under ENGINE SPECIFICATIONS. Valves are available with .015" (.38 mm) and .030" (.76 mm) oversize stems.
  2. If oversized valves or oversized valve stem oil seals are not available, valve guide may be bored out to use a service bushing. Always use reamers in proper sequence (smallest first).
NOTE: Always grind valve seat after valve guide has been reamed or service bushing has been installed.
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