Removing
1. Disconnect the negative battery cable before removing it.
2. Remove the air filter (see subsection 6.3.1.2).
3. Rotate the engine overdrive cam to disengage it from the throttle linkage.
4. Align the hole in the cam with the hole in the throttle body and lock the cam in position by inserting a 3mm drill bit or pin into the holes.
5. Loosen the mounting screws of the upper section of the throttle body, then carefully remove the upper section from the lower section.
6. Remove the gasket and discard it; when installing, you must use a new one.
7. Loosen the two mounting screws and remove the valve mounting plate from the lower section of the throttle body.
8. Remove the valve from its socket and remove the sealing ring.
Installation
9. Installation is carried out in the reverse order of removal.
10. When installing, use a new O-ring and gasket between the throttle body sections.