Valve Clearance: Adjustments
VALVE CLEARANCE ADJUSTMENTNOTE: Valves should be adjusted only when the cylinder head temperature is less than 100°F (38°C). Adjustment is the same for intake and exhaust valves.
^ After adjusting, Retorque the crankshaft pulley bolt to 181 Nm (134 ft. lbs.).
1. Remove the cylinder head cover.
2. Set the No. 1 piston at TDC. "UP" mark on the camshaft pulley should be at top, and TDC marks should align with the cylinder head surface. The crankshaft pulley should be at TDC.
3. Adjust valves on No. 1 cylinder.
- Intake: 0.18-0.22 mm (0.007-0.009 inch)
- Exhaust: 0.23-0.27 mm (0.009-0.011 inch)
4. Loosen the locknut, and turn the adjustment screw until the feeler gauge slides back and forth with a slight amount of drag.
CAUTION: Do not overtighten the locknuts; the rocker arms are made of aluminum.
5. Tighten the locknut, and check the clearance again. Repeat the adjustment if necessary.
6. Rotate the crankshaft 180° counterclockwise (camshaft pulley turns 90°). The "UP" mark should be on the exhaust side. Adjust valves on No. 3 cylinder.
7. Rotate the crankshaft 180° counterclockwise to bring No. 4 piston to TDC. Both TDC grooves are once again visible. Adjust valves on No. 4 cylinder.
8. Rotate the crankshaft 180° counterclockwise to bring No. 2 piston to TDC. The UP" mark should be on the intake side. Adjust valves on No. 2 cylinder.