Lastik levyesi yama setiyle birlikte kullanıldı.

Because lastik levyesi is a common Turkish noun compound pattern.

• lastik = tire
• levye = lever

When one noun describes another in Turkish, the second noun usually takes the compound ending -(s)I. So:

• lastik levyesi = tire lever

That -si here does not mean his/her/its in the ordinary possessive sense. In this structure, it is just part of how Turkish forms compounds.

A few similar examples:

• kahve fincanı = coffee cup
• telefon numarası = phone number
• yama seti = patch kit

It is the compound/possessive-looking ending -(s)I.

Since levye ends in a vowel, Turkish inserts s before the ending:

• levye
  • si → levyesi

This is the same ending you often see in noun compounds. It looks like the 3rd person possessive suffix, and historically it is the same form, but in a phrase like lastik levyesi, it is best understood as the normal way Turkish builds a compound meaning tire lever.

This word contains two things at once:

1. yama seti = patch kit
2. -yle = with

So:

• yama seti
  • ile
• becomes yama setiyle

The form -yle is a shortened, attached version of ile.

Because seti ends in a vowel, Turkish adds a buffer y:

• seti + ile → setiyle

So yama setiyle means with the patch kit or together with the patch kit.

For the same reason as lastik levyesi: it is another noun compound.

• yama = patch
• set = set/kit

In Turkish, this becomes:

• yama seti = patch kit

Again, the second noun takes the compound ending -(s)I.

So both parts of the sentence contain this structure:

• lastik levyesi = tire lever
• yama seti = patch kit

Birlikte means together or together with.

In this sentence, it strengthens the idea that the tire lever was used along with the patch kit, not separately.

So:

• yama setiyle kullanıldı = was used with the patch kit
• yama setiyle birlikte kullanıldı = was used together with the patch kit

The version with birlikte sounds a bit more explicit and natural when you want to stress that two items were used in combination.

Kullanıldı comes from the verb kullanmak, meaning to use.

It breaks down like this:

• kullan- = use
• -ıl- = passive
• -dı = past tense

So:

• kullanıldı = was used

This is why the whole sentence is passive in English too:

• Lastik levyesi yama setiyle birlikte kullanıldı.
• The tire lever was used together with the patch kit.

Turkish uses the passive very naturally, just like English does.

Here, the focus is on the tire lever, not on who used it. The person doing the action is either unknown, unimportant, or simply not mentioned.

Compare:

• Birisi lastik levyesini yama setiyle birlikte kullandı.
  = Someone used the tire lever together with the patch kit.

• Lastik levyesi yama setiyle birlikte kullanıldı.
  = The tire lever was used together with the patch kit.

The passive lets Turkish highlight the thing affected by the action.

Because in this sentence it is the subject of a passive verb, not the direct object of an active verb.

Compare:

• Active: Birisi lastik levyesini kullandı.
  Here lastik levyesini is the object, so it takes the accusative -ni.

• Passive: Lastik levyesi kullanıldı.
  Here lastik levyesi becomes the grammatical subject, so there is no accusative ending.

That is why you see:

• levyesi in the passive sentence not
• levyesini

Because Turkish normally puts the finite verb at the end of the sentence.

A very common Turkish word order is:

• Subject + other elements + verb

So here:

• Lastik levyesi = subject
• yama setiyle birlikte = with the patch kit / together with the patch kit
• kullanıldı = was used

This final-verb pattern is one of the most important differences from English.

Yes, Turkish word order is flexible, but the verb usually still stays at the end.

For example, you could also say:

• Yama setiyle birlikte lastik levyesi kullanıldı.

That version puts more emphasis on yama setiyle birlikte.

But the original order is perfectly natural and straightforward.

Not always. ile can mean different kinds of with, depending on context.

It can mean:

1. together with / along with
2. by means of / using

In this sentence, because of birlikte, the meaning is clearly together with:

• yama setiyle birlikte = together with the patch kit

Without birlikte, -yle could sometimes feel a bit more ambiguous, depending on context.

Turkish does not have articles like the and a/an in the same way English does.

So lastik levyesi by itself does not directly mark that distinction. The exact English choice depends on context.

Depending on the situation, it could be translated as:

• the tire lever
• a tire lever

In many practical or instructional contexts, English often uses the because the object is understood from the situation. But Turkish itself does not force that choice here the way English does.