Patent ID: 8132316

Claim:
A handheld apparatus for setting a tappet screw at a predetermined clearance from an associated engine valve, comprising: a screwdriver portion; a pneumatic portion; and a controller electrically connected to the screwdriver portion and the pneumatic portion, wherein the screwdriver portion is adapted to engage the tappet screw so as to rotate the tappet screw and the pneumatic portion is adapted to direct an air flow through a cylinder associated with the valve, and wherein the controller monitors the air flow through the cylinder and controls the screwdriver to initially move the tappet screw to the predetermined clearance based on the monitored air flow, and wherein the pneumatic portion further comprises: a regulator, in fluid communication with a main air supply, an electric solenoid valve, electrically connected to the controller, a mass air flow meter, a pneumatic plug, in fluid communication with the mass air flow meter and adapted for insertion into a spark plug hole of the cylinder, and wherein the electric solenoid valve is disposed between the regulator and the pneumatic plug, and is controllably opened and closed by the controller to selectively permit a regulated air flow from the regulator to the cylinder via the plug.