A while ago I broke a cylinder drain bolt while tightening it. I was able to extract it.

Now I am looking for the torque values for the two cylinder drain bolts as well as for the water pump drain bolt, but can’t find either value.

I’ve looked in the Honda service manual as well as the Clymers equivalent.

anyone know ?

 

I do not but in that situation, I often will add a dab of blue thread locker and tighten to "just past snug", checking over the next couple of rides to see if I need to tighten any further...

 

When it is not specified you can probably use the torque that's goes with the particular bolt size.

Here's one I randomly found. It's interesting to see that the torque value for lubricated bolt is significantly less. So if the bolt is lubricated and you are torqueing it to what you feel is right, take more care.