need help with changing fluide on manual tranny

[yz125rider21]

ok guys I was helping my lil brothers g/f out and changed her clutch, everything is all back together but when i popped out axles in the beggining fluide went everywhere. So I need to know how much fluide to put back in it. but before I can do that I need to know which bolt is to drain the fluide and which bolt is to add the fluide? I need this asap please. Thanks in advance

[Thenethiel]

The filler and drain plugs should both be 24mm hex heads, the filler is on the front of the transmission case, the drain plug behind that and on the bottom. Just take both plugs out, drain it out, then put the drain plug back in, lower the car if you raised it to get at the drain. Then just fill it up through the filler hole until the oil starts coming back out, there's no dipstick or precise amount, just fill'er till it's full.

This reminds me I haven't changed mine in like 60,000 miles, I should probably do that...

[CamryWilly]

You have to fill her up by the up most hole...when all is back together you have to pump some oil in the tranny until it starts leaking by this same hole.

Be careful!!! This stuff is cancerous!!!!!

but don't be surprised, this tranny takes A LOT of oil. Huge capacity...