could anyone give me a rough idea about changing the gearbox oil on a 900cc 96cinq,is there a filter?do you need an allen key?where is the sump?how do you know if you put in enough?etc any help would be greatly appreciated.....

Get a hayne's it tells you in detail

if i wanted to buy a haynes i wouldnt have botherd asking here,just looking for a quick fix

If you're going to do anything to your car getting a Haynes or equivalent is a wise decision, especially when you consider that to break even on the purchase is about half an hour of cheap workshop labour.

drain plug is below the driveshaft on OHV
remove filler plug on top/side of gearbox and clean both the plugs,clear off any swarf and renew sealing washers.
oil should be filled to the lower edge of the filler hole.
as said though for around £10 off ebay a haynes is a wise buy

tanx guys