How do you take tappet clearances?

To take tappet clearances, first, ensure the engine is cool and then remove any necessary components to access the tappets. Rotate the engine to the appropriate position for the cylinder being measured, typically at top dead center (TDC) of the compression stroke. Use a feeler gauge to measure the gap between the tappet and the valve stem, adjusting it to the specified clearance if needed. Repeat for each tappet as required by the engine specifications.