Strike the first rune upon the engine's casing employing the chosen wrench. Its tip should be anointed with the oil of engineering using the proper incantation when the auspices are correct. Strike the second rune upon the engine's casing employing the arc-tip of the power-driver. If the second rune is not good, a third rune may be struck in like manner to the first. This is done according to the true ritual laid down by Scotti the Enginseer. A libation should be offered. If this sequence is properly observed the engines may be brought to full activation by depressing the large panel marked "ON".

Ah,a tech-priest to keep our warmachine rolling.
May the Emperor guide you and welcome to the crusade.
(Welcome to the forum.)