Another D3 Question

[acsoccer10]

I was talking with my neighbor and he has a D6 (70's model). He said there is a grease fitting on the front axle. I have a manual but it does not have a lubrication diagram. I have looked all over the machine and the only grease fittings I see are on the front for the blade. Does anyone know of any grease fittings (other than the track tensioner) on the or around the undercarriage or do you have a lubrication diagram?

Thanks,