Has anyone worked on a Ryobi ER-160 gas powered hammer drill?

[Actonite]

I have a Ryobi ER-160 gas powered hammer drill. I haven’t used it in quite a while, and when I started it up, it was dragging, though the engine was running fine. I thought I’d take out the 4 bolts holding the gear assembly to the engine and then grease the gears. I found it very challenging to realign the gears when it was time to put it back together, though I did get it operational. I’m sure there is a simple way to rebuild this drill, yet I can’t find a service manual online. Ryobi doesn’t even recognize the ER-160 when I talked with customer service. Does anyone have a service manual for this old drill, or has anyone worked on one of Ryobi’s gas powered hammer drills before and can share some tips? I know most people just rely on battery powered drills, but I don’t use it enough to keep the batteries from going bad. It’s cheaper for me to buy a little gas than to buy new batteries.



Here are the parts. https://www.partselect.com/Models/E...Position=8&mfg=Ryobi&Type=Hammer Drill&Mark=8

 

[Dustin4185]

I haven’t worked on one, but have used one a few times. It always seemed “draggy” to me until they warmed up. My Hilti is the same way. I’m sure the grease gets hard no more than I use it nowadays.

 

[Actonite]

After respreading the grease on the gears, the drill is a whole lot less draggy, though it has never rotated as smoothly as an electric drill. I know most people don't choose to work on their power tools, but I wish manufacturers would make the service manuals available to the consumers... especially old tools that are no longer maintained by the manufacturer.