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Valve Clearance

  1. Valve clearance is between the cam lobe and cam follower.
  2. Clearance is adjusted by means of replaceable discs. Discs are available in 26 thicknesses from .119-.166" (3.0-4.25 mm). Discs most frequently used are .140-.150" (3.55-3.80 mm).
  3. To adjust, warm up engine to normal operating temperature. Using wrench on center bolt of crankshaft pulley, hand turn crankshaft clockwise until cam lobes for cylinder being tested are pointing upward. Use feeler gauge to check valve clearance.
  4. Use Depressor (2078) to press down cam follower, so that adjusting disc can be readily removed with Pliers (US 4476). When depressing cam followers, turn so that openings are at a 90° angle to cam.
VALVE CLEARANCE SPECIFICATIONS

Application In. (mm)
Intake .008-.012 (.20-.30)
Exhaust .016-.020 (.40-.50)
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