Finding the station in 2009 was easy enough but it was challenging to figure out the angle Harry approached the station from.
At 00:47:50 Harry appears to run downhill to a side entry.
A house at the top left corner of 00:47:50, helps identify the perspective. The house is located on the opposite side of the park in nearby Magellan Avenue. Here’s the same view in Spring 2009:
The doorway Harry ran through in 1971 has been built over but the archway can still be seen. An article in the San Francisco Chronicle says the station was remodeled in 1985.
At 00:48:00 Harry enters the station and walks past a grey door, then the top of the stairway as he heads for the phone.
The archway above the original entry is recognisable today (where the “Downtown” sign hangs) as is the stairway Harry runs down to take the K car to Church & 20th (Source):
In 2009, the grey door is brown and the stairs are still there, but if you look closely you’ll see they have different newels (the post at the top of the stairs on either side) and balusters (the framework) (Source):