Valve Clearance
- Valve clearance is adjusted with engine shut off and either warm or cold. Remove valve cover. Turn crankshaft center bolt until camshaft is in position for firing No. 1 cylinder. Both cam lobes should point up at equally large angles. Pulley timing mark should be at 0°.
- Check valve clearance of No. 1 cylinder, using a feeler gauge between camshaft lobe and adjusting discs. Intake and exhaust valves have same clearance.
- If clearances are incorrect adjust by changing thickness of discs, which are available in 0.002" (.05 mm) increments from 0.130" (3.30 mm) to 0.177" (4.50 mm). Use tools 5022 and 5026 to depress and remove disc.VALVE CLEARANCE SPECIFICATIONS
Application Cold In. (mm) Hot In. (mm) Intake and Exhaust Checking .012-.018 .014-.020 (.30-.45) (.35-.50) Setting .014-.016 .016-.018 (.35-.40) (.40-.45) - After valves for No. 1 cylinder are properly adjusted, rotate crankshaft to firing position for No. 3, No. 4 and No. 2 cylinders in sequence and complete adjustment.