hensokuki o kakuninsuru.

direct object particle

Breakdown of hensokuki o kakuninsuru.

• 確認かくにんする: to check
• 変速機へんそくき: a bicycle gear system

Questions & Answers about hensokuki o kakuninsuru.

How do you read 変速機を確認する?

It is read:

へんそくきを かくにんする
hensoku-ki o kakunin suru

• 変速機 = へんそくき
• を = pronounced o
• 確認する = かくにんする

In natural speech, を may sound closer to o than wo.

What does を do here?

を marks the direct object of the verb.

So in 変速機を確認する:

• 変速機 = the thing being checked
• 確認する = to check / confirm
• を = shows that 変速機 is what the checking is being done to

So the structure is basically:

[thing] を [verb]
gearbox/transmission + object marker + check

Why is the verb in the dictionary form 確認する instead of 確認します?

The dictionary form is very common in:

• manuals
• instructions
• labels
• checklists
• written procedures
• technical writing

So 変速機を確認する。 can sound like a manual instruction such as Check the transmission.

If you wanted a more polite full sentence in conversation, you might say:

• 変速機を確認します。
• 変速機を確認してください。 = Please check the transmission.

Is this a complete sentence even though there is no subject?