83. Valve Clearance Adjustment

Valve Lash Adjustment





1. Important: Adjust the valves only when the cylinder head temperature is less than 38°C (100°F).

Rotate the crankshaft to align the mark (2) on the sprocket (237) with the pointer (1) on the oil pump housing.





2. Rotate the crankshaft balancer and align the white mark (1) on the balancer with the locating tab (2) on the front cover.





3. Inspect cylinder number 1 for top dead center (TDC) position. The mark (2) on the front cover should be aligned with the mark (1) on the sprocket.





4. Identify the adjusting bolt (216) and nut (217) locations.





5. Select the proper thickness feeler gage.
^ Intake valve adjustment: 0.2 - 0.24 mm (0.008 - 0.009 inch)
^ Exhaust valve adjustment: 0.28 - 0.32 mm (0.011 - 0.013 inch)
6. Insert a feeler gage (1) between the adjusting screws (216) and the ends of the valve stems for cylinder number 1. Slide the feeler gage back and forth, adjusting the screws, until you feel a slight amount of drag. If you feel too much drag, loosen the locknut and turn the adjusting screw (216) until the drag on the feeler gage is correct.
7. Tighten the locknut and check the clearance again. Repeat the adjustment if necessary.





8. Rotate the engine clockwise and position number 4 piston at TDC. Align the mark (2) on the front cover with the TDC mark (1) on the sprocket.
9. Check and adjust cylinder number 4 valve clearance as required.





10. Rotate the engine and position number 2 piston at TDC. Align the mark (2) on the front cover with the TDC mark (1) on the sprocket.
11. Check and adjust cylinder number 2 valve clearance as required.





12. Rotate the engine and position number 5 piston at TDC. Align the mark (2) on the front cover with the TDC mark (1) on the sprocket.
13. Check and adjust cylinder number 5 valve clearance as required.





14. Rotate the engine and position number 3 piston at TDC. Align the mark (2) on the front cover with the TDC mark (1) on the sprocket.
15. Check and adjust cylinder number 3 valve clearance as required.





16. Rotate the engine and position number 6 piston at TDC. Align the mark (2) on the front cover with the TDC mark (1) on the sprocket.
17. Check and adjust cylinder number 6 valve clearance as required.