Celica GT L4-1.8L (1ZZ-FE) (2001)
9. IF VALVE OR ROCKER ARM IS REPLACED, REPLACE SHIM AS FOLLOWS
a. Install a standard shim of 2.400 mm (0.0945 inch) thickness at low temperature and install the rocker arm.
b. While pressing the rocker arm, measure the clearance "A" of valve "b" in the condition that a clearance of the other value is 0 mm (0 inch).
c. To adjust the valve highs, replace a shim of valve "b" with a shim that has thickness of to t1 = A + 2.400
d. After adjusting the valve highs, adjust the clearance as described from step 3.