Measure the clearance of each valve by inserting a thick-
ness gauge [A] between the adjusting screw [B] and the
Valve Clearance (when cold)
0.13 ∼ 0.18 mm (0.0051 ∼ 0.0070 in.)
0.18 ∼ 0.23 mm (0.0070 ∼ 0.0091 in.)
Valve Clearance Adjustment
If the valve clearance is incorrect, loosen the locknut [A]
and turn the adjusting screw [B] until the correct clearance
Tighten the locknut.
Torque - Valve Adjuster Locknuts: 25 N·m (2.5 kgf·m, 18
Install the two caps on the alternator cover.
Remove the cylinder head (see Cylinder Head Removal).
Use a valve spring compressor assembly to press down
the valve spring retainer, and remove the split keepers.
Special Tools - Valve Spring Compressor Assembly [A]:
Valve Spring Compressor Adapter, 22 [B]:
Check to see that the valve [A] moves smoothly up and
down in the guide.
Check to see that the valve seats properly in the valve
seat. If it does not, repair the valve seat.
Replace the oil seal [B] with a new one.
Apply a thin coat of molybdenum disulfide grease to the
valve stem before valve installation.
Be sure to install the inner [C] and outer [D] spring seats
under the inner [E] and outer [F] springs.
Install the springs so that the closed coil [G] end is facing
toward the valve seat (downwards).
Install the spring retainer [H], press it down with the valve
spring compressor assembly, and fit the split keeper [I]
Special Tools - Valve Spring Compressor Assembly: 57001
Valve Spring Compressor Adapter,
Install the other removed parts.
ENGINE TOP END 4-23