Check / Adjust / Set Valve Clearance

Check valve clearance

  • Remove valve cover.1.061
  • Turn crankshaft bolt clockwise until the cam lobes of the cylinder to be checked point upward.
  • Insert feeler gauge between cam lobe and valve shim.
  • Warm engine specifications (coolant temp, above 35° C (95° F)
  • Intake — 0.20 — 0.30mm (0.008 — 0.012in.)
  • Exhaust — 0.40 — 0.50mm (0.016 — 0.020in.)
  • Cold engine (coolant temp, below 35° C (95° F)
  • Intake — 0.15 — 0.25mm (0.006 — 0.010in.)
  • Exhaust — 0.35 — 0.45mm (0.014 — 0.018in.)

 

 

Adjust valve clearance

1.062If valve clearance is incorrect —
Turn crankshaft clockwise about 1/4 turn.

When adjusting valves, camshaft must be slightly offset so that valves do not contact piston when cam followers are depressed.

 

 

  • 1.063Depress cam followers with valve compressor tool
  • Remove shim to be exchanged with valve shim pliers
  • Install proper shim.
  • Too small clearance — use thinner shim
  • Too large clearance — use thicker shim
  • Recheck valve clearance.