Valve Adjustment
- Rotate crankshaft until No. 1 piston is at TDC on compression stroke (intake and exhaust valves closed).
NOTE: During adjustment of valves, check position of balls in ends of rocker arms. Flat surface of ball must be in contact with stem of valve. - Adjust clearance of intake valves for No. 1 and No. 2 cylinders and exhaust valves for the No. 1 and No. 3 cylinders. See Figure 52. Correct clearance for all valves when engine is hot is 0.3 mm (0.012 in.). To adjust clearance, loosen lock nut and turn adjustment screw. Tighten lock nut to 16 to 21 N•m (142 to 186 lbf in).
- Rotate crankshaft clockwise one complete turn. Adjust remaining valves.
- If valves are adjusted when engine is cold, check adjustments again after engine is warm.
