Assuming that you have the H6, because the 4 has vee belts.
Never done one on Subaru but there is a cover called the "collector cover" you have to remove to gain access. Should be just a couple of bolts. From there you locate the belt tensioner, use a wrench pulling clockwise to relieve tension and the belt slips right off. Back on is reverse order. It is the same for any car that has a serpentine belt.
I see the owner's manual recommends this be done by the dealer. Best of luck!
105,000 miles
The 2002 Subaru Outback has 16 valves.
The 2002 Subaru Outback has a 5-speed manual.
The 2002 Subaru Outback is a gas-powered vehicle.
The 2002 Subaru Outback has a flat 4 engine.
The height of the 2002 Subaru Outback is 5 ft. 3.3 in. (63.3 in.).
The 2002 Subaru Outback is 15 ft. 7.4 in. (187.4 in.) long.
The 2002 Subaru Outback's turning circle is 36.7 ft..
The 2002 Subaru Outback runs on regular unleaded.
The 2002 Subaru Outback has a drag coefficient of 0.32 Cd.
The curb weight of the 2002 Subaru Outback is 3425 lbs..
The 2002 Subaru Outback has single overhead cam (SOHC).