Translation guide
The English word 'overhaul' can mean to completely repair or renovate something, or to thoroughly examine and improve a system. This guide covers natural Japanese expressions for both meanings.
To take apart, repair, and reassemble a machine, vehicle, or system so it is like new.
To thoroughly review and make major changes to a system, process, or organization to improve it.
Means 'to fundamentally review/reconsider'. Commonly used for overhauling policies, systems, or strategies.
税制を抜本的に見直す必要がある。
We need to overhaul the tax system.
The English word 'overhaul' is often translated directly as オーバーホール, but this is mainly used for mechanical repairs. For systemic changes, use the phrases listed under 'Examine and improve a system'.
A loanword from English, commonly used for mechanical overhauls, especially of engines, watches, etc. Widely understood.
エンジンをオーバーホールする。
I will overhaul the engine.
Literally 'disassembly repair'. A more technical term for taking something apart and fixing it.
時計の分解修理を依頼した。
I requested an overhaul of the watch.
Means 'complete disassembly and maintenance'. Used in technical contexts like aircraft or heavy machinery.
航空機の全分解整備には数週間かかる。
A complete overhaul of the aircraft takes several weeks.
Means 'to comprehensively reform'. Suitable for large-scale changes in organizations or laws.
教育制度を全面的に改革する計画だ。
There is a plan to overhaul the education system.
Means 'to renew' or 'to revamp'. Often used for overhauling an image, brand, or system.
会社のイメージを刷新する。
We will overhaul the company's image.
Literally 'to carry out a major reform'. Emphasizes the scale of change.
政府は行政の大改革を行うと発表した。
The government announced it would overhaul the administration.