Hi Ian.

You are more than welcome to print it out and show it to the mechanic.

The sensor sits right on top of the engine, on the tappet cover, right in the middle of the cover. It has a electrical wire with 3 wires connected to it. Just remove the plug, loosen the nut with a 8 spanner, remove the sensor and place the new one in its place. Shouldn't take more than 2 - 3 minutes.

Hope it helps

Riaan