Where to oil Porter Cable Speedmatic 89 radial arm saw?

I just inherited an old Porter Cable radial arm saw (Speedmatic 89 - model K89) with my new house. Too heavy for the previous owner to haul away with him. I replaced the wiring yesterday, popped on a new blade and fired it up. It runs fine, but either it's inherently very noisy or it could use an oiling/greasing. My problem is that I don't see anywhere to oil or grease it! I searched extensively online and found no literature at all for this particular saw. Does anyone have any knowledge in this area? Any help would be greatly appreciated. Thanks in advance.

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