In this video I go through a very detailed process of taking this nailer apart and cleaning. Then removing the o-rings and replacing them with new o-rings. My nailer would only fire about every 4th or 5th nail due to sitting for a long time.

O-Ring Kit KT-HA-104:
https://www.theoringstore.com/store/i...

Silicone Grease:
https://amzn.to/3RuWqOX

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