New member needs info on HD6G

[Dozer Dave]

I recently purchased a AC HD6G. Most of the tractor appears to be in good shape and the motor runs strong. Can anyone tell me where to find an operators manual. There is a second dip stick right beside the engine oil dip stick and I think it's for the hydralic oil reservoir but I'm not sure. Nothing registers on that dip stick. If it is hydraulic where is the fill port?