Perchin qurolini qisish mumkin bo'lmasa, qanday tuzatish kerak?

Ta'mirlash usuli: tashqi tomondan yuqori qopqoqni burab, keyin ichki qismini torting va nihoyat tashqi qopqoqni burab qo'ying.

https://www.yukerivet.com/news/application-method-of-rivet-gun-i/