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MAINTENANCE SERVICE TSB Revision GENERAL 00-71 4. Using a thickness gauge, measure the valve clearance with the arrow shown in Figure. If deviated from the standard Standard value: Intake valve 0.20 ± 0.03 mm (0.008 ± 0.0012 inch) Exhaust valve 0.30 ± 0.03 mm (0.012 ± 0.0012 inch) 5. Turn the crankshaft clockwise 360 degrees, and put the timing mark on the exhaust camshaft sprocket in position 6. Check the valve clearance with the arrow shown in Figure. In the same procedure as 4. 7. If the valve clearance is deviated from the standard value, remove the camshaft and the valve tappet. For the camshaft . 8. Using a micrometer, measure the thickness of the removed valve tappet. 9. Calculate the thickness of the newly installed valve tappet through the following equation. Equation Intake valve: A = B + [C − 0.20 mm (0.008 inch)] Exhaust valve: A = B + [C − 0.30 mm (0.012 inch)] 10 11 12 7 8 8 3 4 4 3 1 2 2 1 5 6 6 5 9 AK502387AG Intake valve side No.1 No.2 No.3 Exhaust valve side No.1 AK604566AC Timing mark 10 11 12 7 8 8 3 4 4 3 1 2 2 1 5 6 6 5 9 AK502388 AF Intake valve side No.3 No.4 Exhaust valve side No.2 No.4 AK304938 AE Wall thickness |