In the "Supplement for 6 Cylinder Engine Model" of the 2001 Legacy Service Manual, under Mechanical - "V" Belt.....
Or take a picture before you remove the belt !!!!!
The 2001 Subaru Outback has 16 valves.
The 2001 Subaru Outback has a 5-speed manual.
The 2001 Subaru Outback is a gas-powered vehicle.
The 2001 Subaru Outback has a flat 4 engine.
In The Subaru Legacy(Outback) Service Manual and the Chilton or Haynes Repair Manual for the Legacy & Forester 2000 thru 2006.
A Google search turned up a hand full of diagrams. https://www.google.com/#q=2001+subaru+outback+3.0+serpentine+belt+diagram
The 2001 Subaru Outback runs on regular unleaded.
The 2001 Subaru Outback's turning circle is 36.7 ft..
The height of the 2001 Subaru Outback is 5 ft. 2.2 in. (62.2 in.).
The 2001 Subaru Outback has single overhead cam (SOHC).
The 2001 Subaru Outback is 15 ft. 7.4 in. (187.4 in.) long.
The 2001 Subaru Outback has 43.3 in. of front leg room.