Faig servir el desmuntable amb el pneumàtic.

In Catalan, fer servir is a very common way to say to use.

• fer = to do / to make
• servir = to serve
• but together, fer servir functions as an idiomatic expression meaning to use

So:

• faig servir = I use
• fas servir = you use
• fa servir = he/she/it uses

Catalan also has the verb usar, and you may hear it sometimes, but fer servir is extremely common in everyday language.

In this sentence, you should understand faig servir as one unit.

Catalan often leaves out subject pronouns when they are not needed.

The verb form faig already tells you the subject is I, so jo is unnecessary unless you want emphasis or contrast.

So both are possible:

• Faig servir el desmuntable amb el pneumàtic.
• Jo faig servir el desmuntable amb el pneumàtic.

The second version sounds more emphatic, like I use the tire lever..., perhaps in contrast with someone else.

This is very normal in Catalan and is one of the first things English speakers notice, since English usually requires the subject pronoun.

Faig is the 1st person singular present form of fer.

The verb fer is irregular, so its forms do not always look predictable at first.

Some present-tense forms are:

• faig = I do / I make
• fas = you do / you make
• fa = he/she does / makes
• fem = we do / make
• feu = you all do / make
• fan = they do / make

In faig servir, the important thing is that faig agrees with the hidden subject I.

Yes, here desmuntable is being used as a noun.

In practical or mechanical contexts, el desmuntable can refer to a tire lever or similar tool used for removing a tire.

This is a good example of a word that may look adjective-like but is used substantively with the article:

• desmuntable on its own can have an adjective-like sense related to being removable or detachable
• el desmuntable means the tire lever / the lever tool

Languages often do this: an adjective or descriptive form becomes a noun in a specific context.

So in this sentence, el desmuntable is not describing another noun; it is itself the noun.

Catalan uses articles more regularly than English in many situations.

Here, el desmuntable and el pneumàtic mean the tire lever and the tire. The definite article suggests that the speaker is referring to specific, identifiable items in the situation.

That is very natural in Catalan, especially with concrete objects involved in an action.

Compare:

• el desmuntable = the tire lever
• un desmuntable = a tire lever

and

• el pneumàtic = the tire
• un pneumàtic = a tire

English learners sometimes expect Catalan to omit the article more often, but Catalan usually keeps it.

Amb usually means with.

In this sentence, it links el pneumàtic to the rest of the action. Depending on the exact context, it can mean that the tire is the thing involved alongside the tool.

A learner may notice that amb can sometimes feel broader than English with. In real usage, Catalan often relies on context to make the relationship clear.

So yes, if you look at the sentence in isolation, there can be a little ambiguity about exactly how amb el pneumàtic connects:

• it may describe what the tool is being used with
• it may describe the object involved in the action

Usually the situation makes this obvious.

Here, pneumàtic is a noun meaning tire / tyre.

That can surprise English speakers, because English pneumatic is mainly an adjective, as in pneumatic drill or pneumatic pressure.

In Catalan:

• el pneumàtic = the tire
• pneumàtic can also still function as an adjective in other contexts

So this is a case where the Catalan word looks familiar to an English speaker but is used somewhat differently.

The accent in pneumàtic shows where the stress falls: pneu-MÀ-tic.

Accent marks in Catalan are important because they help indicate pronunciation and sometimes distinguish words.

So the written accent tells you that the stressed syllable is mà, not the final syllable.

For learners, it is worth paying attention to accents from the beginning, because they are a regular part of correct spelling and often give useful pronunciation information.

Fer servir behaves like a fixed verbal expression, so the basic idea is that faig servir stays together as the verb part.

That means this is natural:

• Faig servir el desmuntable.

and not a rearranged version splitting the expression in unnatural ways.

You can, however, move other parts of the sentence for emphasis:

• Amb el pneumàtic, faig servir el desmuntable.

You can also replace the object with a pronoun:

• El faig servir. = I use it.

So the expression is flexible in a sentence, but fer servir should be learned as one unit.