Posted on October 22, 2023 by Jack BOBCAT S130 – CYLINDER HEAD – Valve Tappets Remove the valve tappets (Item 1) [Figure 70-80-35]. Measure the O.D. of the tappet [Figure 70-80-36]. Measure the ID of the tappet bore [Figure 70-80-36]. If the clearance exceeds the allowable limit, replace the tappets.