1972 250 WR help oil change

I was going to change the trans oil on my new (to me) 1972 Husky 250 and I look under the engine and find what looks like two drain plugs, whats up with that. Please help, thanks

That is earlier than I deal with however I have heard that some of the bikes had a plug in the bottom of the crank cavity which could be taken out to drain either fuel or water without turning the bike upside down and removing the spark plug and plugging the transmission breather. It should be pretty easy to tell if one plug is into the crank cavity. It is also not unusual to have two drain plugs if there are two places the oil pools as the level goes down. Maybe not in the motorcycle world too often but in other equipment I have and have manuals for.

I don't have a 5 speed...but my guess is:
> If one plug faces straight down, it is the trans/clutch fluid drain.
> If a second plug is on a slant...it holds the shift drum detent spring/pin.
So pull the plug that faces straight down.
If the bike has not been run for awhile...go ahead and pull the clutch cover also...drain/clean that area well...if your clutch is not releasing cleanly now when you put it in gear...or when you kick it over with the clutch lever pulled...consider taking the clutch apart...clean out the old gummy oil...clean metal discs with Scotchbright pads...clean fibre plates...resoak fibre plates in new oil of choice (I use type F ATF...many other preferences) and reassemble and readjust clutch. You'll be glad you did.
Keep in mind that shifter and k/s DO NOT have to be removed...they come off with the clutch cover.

Richard, I think you are right. I looked at the parts book, the vertical plug is listed as a drain plug (BINGO) and the other plug is listed as a ratchet screw. What would happen if I had pulled the 2rong plug?
Thanks everyone

If you accidentally pull the wrong plug, as in pulling the shift detent, (the angled one) you will know immediately you made a mistake. It has a plunger and spring in it. No worries, just put it right back in. It will find where it has to be by itself.

I moving along. Thanx.