A question for small engine mechanics

[rust in the eye]

I recently serviced a Honda snowthrower powered by a GC160 engine.
While reinstalling the cover over the auger drive belt I set the machine on its side which oriented the engine with the recoil start down.
Those in the know probably know what happened, the engine puked a good portion of its just refilled crankcase on the floor. Seemed that is was coming from behind the recoil start.
My question is where did the oil come out from? How, where, is the crankcase vented on these things?

 

[mreisner]

There's a reed valve and a breather tube leading into the carb, possible that that tube may have got knocked off.

 

[The Cobbler]

my guess it's coming from the valve cover

 

[Firebrick43]

There's a reed valve and a breather tube leading into the carb, possible that that tube may have got knocked off.

Or it could have ran thru the breather and breather tube and out the mouth of the carb.

Seemed that is was coming from behind the recoil start.
My question is where did the oil come out from?
How, where, is the crankcase vented on these things?

The breather is below the carb on the side of the block.

Is the air filter soaked in oil?

 

[mreisner]

Or it could have ran thru the breather and breather tube and out the mouth of the carb.

The breather is below the carb on the side of the block.

Is the air filter soaked in oil?

Yeah that's what I meant, instead of having like a PCV valve the Breather has a reed valve

 

[rust in the eye]

Thanks, guys. It's a snow thrower so no air filter and the engine lives under coverings.
If I get ambitious I'll remove the coverings again to look for that breather. I do remember a tube hanging down somewhere but not connected to the carburetor, it DID have one for a fuel bowl drain. There was also another I didn't pay much attention to, must have been it. Meanwhile I now know better than to tip this on it's side. I tip my mower's B&S vert shaft all the time to sharpen blades with no consequences. Lesson learned.

 

[LopezBart]

If the engine doesn't start after tipping it, you may need to tip it some more in other directions to unstick the low oil sensor.