I got a aprilia af1 futura sportpro bike have got brown stuff in bottle next 2 battery what goes in it instead

Question

next to my battery theres a bottle in it i have brown stuff can anyone please tell me what goes in the bottle so i can clean it thanks.

Answer 1

thats your radiator resivour...best bet is to flush the bike with jet wash[take bottom pipe off rad and blast both ways].....it may be your head gasket is gone or just dirty water...once flushed fill it with antifreeze 50/50...

Answer 2

Contact an Aprilia dealer if you get no answer here.

Is the bottle connected to anything with a tube? That might give you a clue what it's for.

What does the "stuff" smell and feel like? That's another clue giver.

Answer 3

look on the top of the cap on the bottle near the battery there should be a symbol on there this should tell you what goes in there  this bottle could be your two stroke oil bottle or your water res bottle i wouldn't recommend cleaning it out with a jet wash lol if its the two stroke oil bottle just fill it back up with two stroke if its the water res bottle follow your water pipes from your radiator they will trace back to the engine and there you have found your "water pump" there will be a 8mm bolt on the bottom of the pump housing remove that take the top off your radiator and flush the system about 4/5 times that should clean it all out but be careful replacing the 8mm bolt DONT OVER TIGHTEN