Valve Clearance: Adjustments
AdjustmentNOTE:
- Valves should be adjusted only when the cylinder head temperature is less than 100 degree F (38 degree C).
- After adjusting, retorque the crankshaft pulley bolt.
1. Remove the cylinder head cover.
2. Remove the upper cover.
3. Set the No. 1 piston at TDC. The "UP" mark on the camshaft pulley should be at the top, and the TDC marks should align with the cylinder head surface.
4. Adjust valves on No. 1 cylinder.
Intake: 0.18 - 0.22 mm (0.007 - 0.009 in)
Exhaust: 0.23 - 0.27 mm (0.009 - 0.011 in)
5. Loosen the locknut, and turn the adjustment screw until the feeler gauge slides back and forth with a slight amount of drag.
6. Tighten the lockout, and check the clearance again. Repeat the adjustment if necessary.
7. Rotate the crankshaft 180� counterclockwise (camshaft pulley turns 90 degrees). The "UP" mark should be on the exhaust side. Adjust valves on No. 3 cylinder.
8. 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.
9. 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.