Another 125m question

[saturnthegiant]

Ok, here's another dummy question- but better safe than sorry! The guy i bought this 125m from emailed a manual, but for some reason i can't get it to open on my pc, so here goes, sorry to be such a dummy!

I need to change the oil. On the bottom of the engine there are two bolts, which is the oil drain plug? One is angled, and one is flush with the bottom of the engine.

[highspeed]

One is for the cam chain adjustment. If you take it off there will be a flat head adjustment screw that will adjust the cam chain. There will be no to maybe a few drips of oil come out. The other is the oil drain. I believe the oil drain is flush with the bottom. I found this out the hard way. I believe its a 12MM wrench that fits it. The camshaft adjustment plug is bigger I think.