How can I prevent oil leaks from my chainsaw?

I disassembled my DCCS620 and added liquid gasket, which helped with the leaks. I store it hanging down with a plastic bag over the bar, and while I still get a few drops, that's likely due to not cleaning the bar well enough after use. Just a heads up, I panicked a bit during disassembly when I forgot about the left-hand screw—it was a learning experience!

From what I've seen, the idea that O-rings will solve everything is pretty misleading. Chainsaws often leak due to issues with the oil reservoir itself or because of oil expanding and leaking out through the ports when the temperature changes. My experience is that all chainsaws leak oil to some extent, especially cordless and electric models. If you're not using it frequently, I just drain the oil to avoid a mess. I keep old rags handy underneath to catch any drips.

Honestly, it's just the nature of chainsaws. They all seem to leak a bit. The best practice is to drain the oil out after each use. It's a straightforward solution and saves you from potential messes later on.

I keep my oiler filled and make sure to squirt some oil on the chain at key spots after a few cuts. It seems to do the job and keeps everything running smoothly. Just out of curiosity, what oiler do you use? I'm often only trimming for a couple of days before storing it for a while.

I added an O-ring and it completely stopped my chainsaw from leaking! It was super easy; I just took the cap to the hardware store and found a fitting O-ring. Make sure it’s not too thick, or you won’t be able to close the cap properly. My chainsaw even has a designated spot for an O-ring on the oil cap—it was meant to be!