Raket lama saya perlu servis karena senarnya terlalu longgar.

In Indonesian, adjectives usually come after the noun they describe.

So:

• raket lama = old racket
• senarnya terlalu longgar = the strings are too loose

This is different from English, where adjectives usually come before the noun.

It can potentially mean either, because lama can mean:

• old in the sense of not new
• former/previous

In this sentence, the context strongly suggests my old racket, since the next part talks about the strings being loose and needing service.

If you wanted to make old clearer, context usually does the job. If you wanted former racket, you would normally need a context where ownership or replacement is being discussed.

Because possession in Indonesian usually works like this:

• noun + possessor

So:

• raket saya = my racket
• rumah saya = my house
• buku saya = my book

That means:

• raket lama saya = literally racket old my
• natural English: my old racket

The whole noun phrase is built first, and then saya marks whose racket it is.

Yes. Raket saya yang lama is also correct, but it has a slightly different feel.

• raket lama saya = my old racket
• raket saya yang lama = my old racket / my racket that is old / my older racket

The version with yang can sound a bit more specific or contrastive, as if distinguishing it from another racket:

• Raket saya yang lama rusak, tapi yang baru masih bagus.
  My old racket is broken, but the new one is still good.

In your original sentence, raket lama saya is a natural compact way to say it.

Perlu means need / needs / necessary.

So:

• perlu servis = needs servicing / needs service

Indonesian often allows a compact structure like this:

• mobil itu perlu perbaikan = that car needs repairs
• raket ini perlu servis = this racket needs servicing

English often uses a verb phrase like needs to be serviced, but Indonesian can express the idea more directly.

In this sentence, servis works like a borrowed word meaning service/servicing. In everyday Indonesian, many borrowed words can behave quite flexibly.

So:

• perlu servis = needs servicing
• mau servis motor = want to service the motorcycle / want to get the motorcycle serviced

A more explicitly verbal version would be:

• Raket lama saya perlu diservis
  = My old racket needs to be serviced

That version is also very natural.

Both are possible, but they are slightly different in style.

1. perlu servis

   • common and natural in everyday speech
   • compact
   • means needs servicing

2. perlu diservis

   • also very natural
   • explicitly means needs to be serviced

3. memerlukan servis

   • grammatically correct
   • a bit more formal or bookish in many contexts

So the original sentence sounds normal and conversational.

Karena means because.

It introduces the reason:

• Raket lama saya perlu servis = My old racket needs servicing
• karena senarnya terlalu longgar = because its strings are too loose

So the full sentence is:

• My old racket needs servicing because its strings are too loose.

You can think of karena as the standard Indonesian word for giving a reason.

Senarnya is made up of:

• senar = string
• -nya = its / the

So senarnya means:

• its string(s)
• or the strings

In this sentence, -nya refers back to raket.

So:

• senarnya terlalu longgar = its strings are too loose

This is a very common thing in Indonesian. A singular noun can sometimes refer to something collective or general, especially when the meaning is obvious from context.

So senarnya can naturally mean:

• its strings
• the stringing of the racket

Indonesian does not always mark plural the way English does. If needed, plural can be shown with reduplication:

• senar-senarnya

But in normal usage, senarnya terlalu longgar is perfectly natural and is understood as referring to the racket’s strings.

No. -nya is very flexible.

It can mean:

• his
• her
• its
• their
• the, depending on context

In this sentence, it means its, because it refers to the racket:

• senarnya = its strings

This is one reason -nya can be tricky for English speakers: it does not always map neatly onto just one English word.

This is an important difference.

• terlalu longgar = too loose
• sangat longgar = very loose

Terlalu usually means excessively, more than is good or acceptable.

So in your sentence:

• senarnya terlalu longgar
  means the strings are looser than they should be, which is why the racket needs service.

If you said sangat longgar, that would only mean very loose, without necessarily implying a problem.

Usually, no. Indonesian often has zero copula, which means there is no separate word for is/am/are in sentences like this.

So:

• senarnya terlalu longgar
  literally: its strings too loose
• natural English: its strings are too loose

This is completely normal in Indonesian.

It can definitely be used for strings too.

Longgar means loose, and it can be used for many physical situations, such as:

• clothes that fit loosely
• a screw or bolt that is loose
• a string or net that lacks tension
• rules or supervision that are lax/loose

In this sentence, it refers to the racket strings not being tight enough.

You could translate it literally that way, but natural English would usually be:

• My old racket needs servicing because its strings are too loose.

That is a better idiomatic translation because:

• English normally says strings for a racket
• needs servicing sounds more natural than needs service in this context

So the Indonesian structure is compact, but the best English translation is usually a bit smoother than a word-for-word rendering.

It is neutral and natural everyday Indonesian.

A few notes:

• raket is standard
• perlu servis is common and conversational
• the sentence is not slangy
• it would sound fine in speech and writing

A slightly more formal version might be:

• Raket lama saya perlu diservis karena senarnya terlalu longgar.

But the original is already perfectly normal.