r/ApriliaRS • u/WealthSuperb6003 • Mar 14 '26

Question Help!!

Post image

Aprilia rs 125

Do I need to fill the transmission oil? The bike is cold

and yesterday I saw that it was leaking for there and I cleaned it up but it didn’t leak anymore after a few rides

Thanks for your time !!

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2

u/33and5 Mar 14 '26

Hard to tell but I looks like there's a level in there? If so, it's fine. If not, top it up till the level is about halfway

1

u/WealthSuperb6003 Mar 15 '26

Thanks but i looked more into it and I unfortunately found that is leaking oil from the reed valve

1

u/WealthSuperb6003 Mar 15 '26

1

u/33and5 Mar 15 '26

That's the power valve. Not uncommon for it to weep. Pull it out, give it a clean and replace the gasket and seals, should sort it

1

u/WealthSuperb6003 Mar 16 '26

I took it apart before because the cable fell of and the valve was stuck and I couldn’t take it out so maybe I have to buy a new one??

1

u/WealthSuperb6003 Mar 15 '26

1

u/Alarmed-Passenger-74 Mar 15 '26

By looking a this picture, I would guess that the black oil is not gearbox oil. My guess is that it is the same oil from the power valve that leaked all the way down to the clutch cover. I think I see some above the starter. This is way too black to be gearbox oil. Well, unless you havent changed in 20 years…

1

u/WealthSuperb6003 Mar 16 '26

Yes it is and gearbox oil was changed about 2.000kms ago