Mecanismul se blochează ușor.

-ul is the definite article attached to the end of the noun. Romanian usually puts the at the end, not before the noun.

• mecanism = mechanism
• mecanismul = the mechanism

So mecanismul is not a different noun; it is just the definite form.

Here se is part of the verb expression a se bloca, which means something like to get blocked, to jam, or to get stuck.

In this sentence, se does not mean the mechanism is literally doing something to itself in a fully literal English sense. It often gives the verb a more intransitive or middle-voice meaning:

• a bloca = to block something
• a se bloca = to get blocked / to jam / to get stuck

So:

• Mecanismul blochează... would normally suggest the mechanism blocks something
• Mecanismul se blochează... means the mechanism gets blocked / jams

Blochează is present tense, 3rd person singular.

That matches the subject mecanismul, which is singular.

So the structure is:

• mecanismul = subject
• se blochează = gets blocked / jams
• ușor = easily

Romanian often uses the present tense the same way English does for general truths or habitual tendencies.

Here ușor means easily.

That can be confusing, because ușor can also be an adjective meaning easy, light, or gentle, depending on context. In this sentence, it functions as an adverb, describing how the mechanism gets stuck.

So:

• un exercițiu ușor = an easy exercise
• se blochează ușor = it jams easily

Romanian often uses the same form for the adjective and the adverb.

Usually, not if you want the same meaning.

Without se, a bloca is normally transitive, so Mecanismul blochează ușor would sound like:

• The mechanism blocks easily or
• The mechanism easily blocks something

That is a different idea and usually feels incomplete unless you add an object.

If you want to say the mechanism itself gets stuck, se blochează is the natural choice.

Because se blochează and este blocat are not the same.

• se blochează = gets blocked / jams
  This focuses on the process or a habitual tendency.
• este blocat = is blocked
  This describes the state of being blocked.

Compare:

• Mecanismul se blochează ușor. = It tends to jam easily.
• Mecanismul este blocat. = It is blocked right now / it is in a blocked state.

So the original sentence sounds more like a general property of the mechanism.

Most naturally, it expresses a general tendency or characteristic:

• The mechanism jams easily.

Romanian present tense can be used both for:

1. something happening now, and
2. something generally true or habitual.

Because of ușor, the sentence strongly suggests a general property rather than a one-time event.

If you wanted a one-time past event, Romanian would more likely use something like:

• Mecanismul s-a blocat. = The mechanism got stuck.

The dictionary form is a se bloca.

You may also see the non-reflexive base verb:

• a bloca = to block
• a se bloca = to get blocked / to jam / to freeze up

This is common in Romanian: a verb can exist in both a non-reflexive and a reflexive form, with related but different meanings.

Romanian neuter nouns behave like:

• masculine in the singular
• feminine in the plural

So in the singular, a neuter noun often looks masculine:

• un mecanism
• mecanismul

But in the plural it behaves like a feminine noun:

• două mecanisme
• mecanismele

So yes, mecanism is neuter, but the singular forms look masculine.

The given order is the most neutral and natural:

• Mecanismul
  • se blochează
    • ușor

Romanian word order is fairly flexible, but changing it can change emphasis.

For example:

• Mecanismul se blochează ușor. = neutral
• Se blochează ușor mecanismul. = less neutral, more marked, often used only in certain contexts

For learners, the original order is the safest choice.

A rough pronunciation guide:

• blochează ≈ blo-KEA-zuh
• ușor ≈ oo-SHOR

A few important sounds:

• ș = sh
• ă = a short neutral vowel, like the a in sofa
• ea in -chează is pronounced together, roughly like ya / ea in one syllable

So se blochează ușor sounds roughly like:

seh blo-KEA-zuh oo-SHOR

Not exactly. It is better understood as a reflexive/middle construction, not a standard passive.

English often translates it with forms like:

• gets blocked
• jams
• gets stuck

Romanian uses se in many places where English uses:

• an intransitive verb,
• get + past participle,
• or a passive-like idea.

So while it can feel passive in meaning, grammatically it is not the same as a normal passive with a fi.

Usually jams easily, gets stuck easily, or gets blocked easily is better.

A se bloca often refers to something no longer moving or functioning properly because it has become stuck. English lock can sometimes work in specific contexts, but it often suggests a deliberate locking action, which is not the main idea here.

So for most situations:

• jams easily
• gets stuck easily
• gets blocked easily

are safer translations.