Honda FourTrax Rubicon TRX520FA5 2020 Owner's Manual page 156

Engine Oil & Filter
Install a New Engine Oil Filter:
Place shop towels under the oil filter cover because oil will flow out.
1. Remove the oil filter cover (1) and O-ring (2) by removing the
bolts (3). Let the remaining oil drain out. Discard the oil filter (4)
in an approved manner (page 214).
2. Apply engine oil to a new O-ring and install it to the oil filter
cover.
3. Install a new oil filter with the rubber seal (5) facing inward,
toward the engine. Make sure the spring (6) and the "OUT-SIDE
(TOWARDS FILTER COVER)" mark (7) faces away from the
engine, toward the oil filter cover.
Use only the Honda Genuine oil filter or a filter of equivalent
quality specified for your model. Using the wrong Honda filter or
a non-Honda filter which is not of equivalent quality may cause
engine damage.
NOTICE
Improper installation of the oil filter can cause serious engine
damage.
RIGHT SIDE
(5)
(1) oil filter cover
(2) O-ring
(3) bolts
(4) oil filter
146 Servicing Your Honda
(4)
(7) (2)
(5) rubber seal
(6) spring
(7) "OUT-SIDE" mark
(6)
(1)
(3)