TSRM/MK3 Supra/Repair Manual
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EM/Engine Mechanical, page 9

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Engine Mechanical — MK3 Supra Engine Mechanical, page 9
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(c) Turn the crankshaft pulley 2/3 revolution (240°‡) and measure the clearance of No.3 (IN) and No.5 (IN) and No.3 (EX) and No.6 (EX) valves.
• Check that the valve lifters on the No.3 cylinder are loose.
• Measure only those valves indicated in the figure.
• Record the measurements which are out of specification. They will be used later to determine the required replacement shims.

(d) Turn the crankshaft pulley 2/3 revolution (240°‡) and measure the clearance of No.2 (IN) and No.6 (IN) and No.2 (EX) and No.4 (EX) valves.
• Check that the valve lifters on the No.2 cylinder are loose.
• Measure only those valves indicated in the figure.
• Record the measurements which are out of specification. They will be used later to determine the required replacement shims.

6. ADJUST VALVE CLEARANCE

(a) Remove the adjusting shim.
• Turn the crankshaft to position the cam lobe of the camshaft on the adjusting valve upward.
• Position the valve lifter notch so that the shim can be removed with a small screwdriver.
• Using SST (A), press down the valve lifter and place SST (B) between the camshaft and valve lifter. Remove SST (A).

SST 09248-55010
HINT: For easy removal of the shim, when positioning SST (B), set it on the lifter so there is space enough to be able to remove the shim.

• Remove the adjusting shim with a small screwdriver and magnetic finger.