Valve Clearance
CAUTION:
Always rotate engine in direction of normal rotation (counterclockwise as viewed from front of engine). Backward rotation may cause timing belt to jump time.
- Adjust valves when engine temperature is 100°F (38°C) or less. Remove valve cover. Rotate crankshaft counterclockwise until No. 1 piston is at TDC of compression stroke.
- Ensure UP marks on camshaft sprockets are at top and TDC grooves on pulleys are aligned with TDC groove on back cover. See Fig 1
. Adjust valve clearance on both valves for No. 1 cylinder. Slide feeler gauge between camshaft lobe and rocker arm. Loosen lock nuts. Turn adjustment screw until clearance is correct. Tighten lock nut. See VALVE CLEARANCE SPECIFICATIONS
table.VALVE CLEARANCE SPECIFICATIONS
Application In. (mm) Exhaust .007-.008 (.18-.20) Intake .006-.007 (.15-.18) - Rotate crankshaft 180 degrees counterclockwise (camshaft sprockets turn 90 degrees) until No. 3 piston is at TDC of compression stroke. UP marks should point to exhaust side. Adjust valve clearance on both valves for No. 3 cylinder.
- Rotate crankshaft 180 degrees counterclockwise until No. 4 piston is at TDC of compression stroke. Ensure UP marks are pointing down. Adjust valve clearance on both valves for No. 4 cylinder.
- Rotate crankshaft 180 degrees counterclockwise until No. 2 piston is at TDC of compression stroke. Ensure UP marks are pointing to intake side. Adjust valve clearances on both valves for No. 2 cylinder. Install new valve cover gasket.