Translations:KAVAN FT160AR - Instruction Manual/122/en

3) The required valve clearance is between 0.04 mm and 0.10 mm (0.0015 to 0.004 inch) measured between the valve stem and rocker arm. Use the 0.04 and 0.10 mm feeler gauges to check clearances. Usually, the 0.04 mm feeler gauge will pass through the gap: 0.10 mm gauge should not.