Righto, then. While the chassis details differ, and therefore the parts list is of limited use, I think this is as far as we need to look, for correct servicing info.
For the gearbox, the plug visible at the front is the level plug, and that at the top is the fill plug/breather. There should also be a drain plug on the underside, somewhere to the rear of the tyne shaft. This would require that the machine be tilted rearwards, and left propped up, to drain the oil.
5 fl oz is about 150mL, near enough, and that's the amount of oil to use, after draining the gearbox.
Ta muchly for the pics, Karl. This is most valuable, in building up the ODK 'knowledge base' for these machines.
