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tappet adjustment on a 720

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I have read the instructions in the service manual on how to adjust the tappets on my 720 but I want to double check with you guys before I make any adjustments. If I understand correctly you turn the engine over by hand until the intake valve opens and closes on the left cylinder and the continue 1/4 turn until the timing marks are lined up.(the left cylinder being the one on the left while seated on the tractor) Now to make the adjustment you place a wrench on the to flats of the tappet and one on the valve adjusting screw and move until you reach the desired clearance. Then turn engine over one complete rev. and repeat to opposite side. Is this correct?

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