Valve Clearance: Adjustments

1. Bring the piston in either the No.1 cylinder or the No. 4 cylinder to TDC on the compression stroke by turning the crankshaft until the crankshaft pulley TDC line is aligned with the timing mark.

Rocker Arm Shaft Torque Sequence:

2. Check the rocker arm shaft bracket nuts for looseness.

Tighten any loose rocker arm shaft bracket nuts before adjusting the valve clearance.
- Rocker Arm Shaft Bracket Nut Torque 2.20 ±0.25 (16.0 ±1.8/21.6 ±2.5) kg.m(lb.ft/N.m).






3. Check for play in the No.1 intake and exhaust valve push rods.
- If the No. 1 cylinder intake and exhaust valve push rods have play, the No. 1 piston is at TDC on the compression stroke.
- If the No.1 cylinder intake and exhaust valve push rods are depressed the No.4 piston is at TDC on the compression stroke.






Adjust the No.1 or the No.4 cylinder valve clearances while their respective cylinders are at TDC on the compression stroke.

Valve Clearance (At Cold):

4ZD1:
Intake 0.15 (0.006) mm(in)
Exhaust 0.25 (0.010) mm(in)

4ZE1:
Intake 0.20 (0.008) mm(in)
Exhaust 0.20 (0.008) mm(in)

4. Loosen each valve clearance adjusting screw as shown.
5. Insert a feeler gauge of the appropriate thickness between the rocker arm and the valve stem end.






6. Turn the valve clearance adjusting screw until a slight drag can be felt on the feeler gauge.
7. Tighten the lock nut securely.
8. Rotate the crankshaft 360°.
9. Realign the crankshaft pulley TDC notched line with the timing mark.
10. Adjust the clearances for the remaining valves as shown in the illustration.