Valve Clearance: Adjustments

ADJUSTMENT

CAUTION: Adjustment of valve clearance should be performed while engine is cold.

Valve Clearance:
Intake: 0.20 ± 0.02 mm (0.0079 ± 0.0008 inch)
Exhaust: 0.25 ± 0.02 mm (0.0098 ± 0.0008 inch)

CAUTION: Adjustment of valve clearance should be performed while engine is cold.





1) Measure all valve clearances.

NOTE: Record each valve clearance after it has been measured.





2) Remove shim of intake side.
1) Prepare the Special Tool (ST).
ST 498187100 SHIM REPLACER KIT





2) Rotate the notch of the valve lifter outward by 45°.





3) Set REPLACER No. 1 (A) to intake camshaft.





4) Set REPLACER No. 2 (B).





5) Set REPLACER No. 3 (C) to hole of REPLACER No. 1.





6) Rotate REPLACER No. 3 (C) until REPLACER No. 2 (B) pushes away valve lifter.





7) Insert tweezers into the notch of the valve lifter, and take the shim out.





3) Remove shim of exhaust side.
1) Prepare the ST.
ST 498187100 SHIM REPLACER KIT





2) Rotate the notch of the valve lifter outward by 45°.





3) Set REPLACER No. 1 (A) to exhaust camshaft.





4) Set REPLACER No. 2 (B).





5) Set REPLACER No. 3 (C) to hole of REPLACER No. 1.





6) Rotate REPLACER No. 3 until REPLACER No. 2 pushes away valve lifter.
7) Insert tweezers into the notch of the valve lifter, and take the shim out.





NOTE: By using a magnet, the shim can be taken out without dropping it.





4) Measure thickness of shim with micrometer.

5) Select a shim of suitable thickness using measured valve clearance and shim thickness, using the table.





S: Shim thickness to be used
V: Measured valve clearance
T: Shim thickness required
6) Set suitable shim selected in one step before, to valve lifter.





7) Turn crankshaft pulley clockwise until arrow mark on camshaft sprocket is set to position shown in figure.
8) Ensure that #1 cylinder intake valve and #3 cylinder exhaust valve are adjusted to specifications.





CAUTION:
- Insert the thickness gauge in as horizontal a direction as possible with respect to the shim.
- Adjust exhaust valve clearances while lifting-up the vehicle.
Valve Clearance:
Intake: 0.20 ± 0.02 mm (0.0079 ± 0.0008 inch)
Exhaust: 0.25 ± 0.02 mm (0.0098 ± 0.0008 inch)

9) Turn crankshaft two complete rotations. Check again to ensure that #1 cylinder intake valve and #3 cylinder exhaust valve clearances are within specifications. If necessary, re-adjust valve clearances.
10) Further turn crankshaft pulley clockwise. Using the same procedures as in two steps before, measure valve clearances.





1) Set arrow mark on camshaft sprocket to position shown in figure, and check #2 cylinder exhaust valve and #3 cylinder intake valve clearances.





2) Set arrow mark on camshaft sprocket to position shown in figure, and check #2 cylinder intake valve and #4 cylinder exhaust valve clearances.





3) Set arrow mark on camshaft sprocket to position shown in figure, and check #1 cylinder exhaust valve and #4 cylinder intake valve clearances.