Η τεχνικός είπε ότι, αν βρω λίγο χρόνο αύριο, θα αλλάξει το λάστιχο και θα κοιτάξει τη ρεζέρβα.

That is a very common point of confusion. In Greek, many nouns for professions or roles can keep the same form for both genders, especially nouns ending in -ος.

So:

• ο τεχνικός = the male technician / mechanic
• η τεχνικός = the female technician / mechanic

The article tells you the gender here, not the noun ending by itself.

Είπε is the aorist (simple past) of λέω (to say), in the 3rd person singular.

So η τεχνικός είπε means the technician said.

It refers to a completed past event: she said it.

Ότι introduces a clause meaning that:

• είπε ότι... = said that...

So the structure is:

• Η τεχνικός είπε ότι...
• The technician said that...

In everyday Greek, ότι can sometimes be replaced by πως, and in some contexts it can even be omitted in speech, but ότι is perfectly standard here.

The clause αν βρω λίγο χρόνο αύριο (if I find a little time tomorrow) is inserted inside the larger clause after ότι.

So the main idea is:

• Η τεχνικός είπε ότι θα αλλάξει το λάστιχο και θα κοιτάξει τη ρεζέρβα.

And inside that, Greek inserts the condition:

• αν βρω λίγο χρόνο αύριο

The commas help show that this conditional clause is interrupting the flow of the main reported statement.

After αν for a future or open condition, Greek normally uses the subjunctive form, not θα.

So:

• αν βρω = if I find
• not αν θα βρω

That is very important: in this kind of sentence, Greek does not usually use θα after αν.

Why βρω specifically?

Because βρω is the aorist subjunctive of βρίσκω. It presents the action as a single event: if I manage to find some time.

Compare:

• αν βρω χρόνο = if I find time (one occasion, future)
• αν βρίσκω χρόνο = if I happen to be finding time / if I generally find time (more habitual or repeated)

So αν βρω is the natural choice here.

Greek often leaves out subject pronouns when the verb ending already shows the person.

Here, βρω is 1st person singular, so it means:

• I find

Greek does not need to say εγώ unless it wants emphasis or contrast.

So:

• αν βρω λίγο χρόνο = if I find a little time

The subject is understood from context to be η τεχνικός.

Both verbs are 3rd person singular:

• θα αλλάξει = she/he will change
• θα κοιτάξει = she/he will check/look at

Since the sentence began with Η τεχνικός είπε..., and no new subject is introduced, Greek naturally understands the subject of those future verbs as the technician.

So Greek does not need to repeat she.

In Modern Greek, the future is usually formed with θα + verb form.

Here:

• θα αλλάξει = will change
• θα κοιτάξει = will check

These are perfective future forms, which means the actions are seen as whole, single events. That fits the context well: changing the tire and checking the spare are each viewed as one complete action.

If Greek wanted a more ongoing, repeated, or habitual sense, it could use imperfective forms instead, such as:

• θα αλλάζει
• θα κοιτάζει

But that would sound less natural here.

In Greek, when two coordinated verbs are both in the future, it is normal to repeat θα:

• θα αλλάξει ... και θα κοιτάξει ...

This is clearer and more natural than trying to let one θα cover both verbs.

So Greek usually prefers:

• θα κάνει αυτό και θα κάνει εκείνο

rather than leaving the second future marker out.

These are all in the accusative, because they are direct objects.

• βρω λίγο χρόνο = find a little time
• θα αλλάξει το λάστιχο = will change the tire
• θα κοιτάξει τη ρεζέρβα = will check the spare

A few details:

• χρόνος becomes χρόνο in the accusative singular
• λάστιχο is neuter, and neuter singular often looks the same in nominative and accusative
• ρεζέρβα is feminine, so its article is τη(ν) in the accusative

Also, λίγο agrees with χρόνο, so it is also accusative singular here.

Both are possible, depending on style and pronunciation.

The full form is την, but in Modern Greek the final -ν is often dropped before many consonants, so:

• την ρεζέρβα
• τη ρεζέρβα

Both can be correct.

The shorter form τη is very common in everyday written Greek.

Yes. Greek word order is fairly flexible, especially with adverbs like αύριο.

This sentence has:

• αν βρω λίγο χρόνο αύριο

But you could also hear:

• αν βρω αύριο λίγο χρόνο

Both are natural. The difference is mostly one of rhythm or emphasis, not basic meaning. Greek often moves time words around more freely than English does.