Learn Italian: C'è un disservizio, quindi lo faccio controllare dal manutentore. - There is a service failure, so I have the maintenance worker check it.

This is the strict rule for causative verbs like fare (to make/have someone do something) and lasciare (to let). The conjugated verb (faccio) and the infinitive (controllare) act as a single, inseparable block. Because of this, object pronouns like lo must go before the conjugated verb and cannot be attached to the infinitive.

Can I separate the verbs and say lo faccio il manutentore controllare, matching the English word order?

No. Unlike English, which puts the person doing the action between the two verbs (I have the worker check it), Italian keeps the causative verb (faccio) and the infinitive (controllare) strictly glued together. The person performing the action must always come after this verb block.

Why is the maintenance worker introduced by dal (by the) instead of being a direct object?

Because the direct object spot in this sentence is already taken by lo (the service failure). In Italian, a causative sentence cannot have two direct objects. When the infinitive verb has a direct object, the person performing the action must be introduced by da (by) or a (to). Using da here makes it sound similar to a passive construction: I have it checked by the maintenance worker.

What exactly is a disservizio?