Honda FourTrax Foreman Rubicon TRX500FA5 2019 Owner's Manual page 150

Engine Oil & Filter
Checking & Adding Oil
Refer to Safety Precautions on page 119.
Check the engine oil level each day before operating your ATV and
add if needed.
The dipstick is located at the front left crankcase cover.
Before riding your ATV, check the engine oil level.
1. Park your ATV on a firm, level surface.
2. Start the engine in a well-ventilated area and let it idle for 3 – 5
minutes. If the air temperature is below 10°C (50°F), let the
engine idle for an additional 5 minutes (a total of 10 minutes).
3. Stop the engine and wait for 2 – 3 minutes.
4. Remove the oil check lid (1) by disengaging the stud (2) from the
grommet (3) and releasing the tabs (4) from the slits.
LEFT SIDE
(3)
(2)
(1)
(1) oil check lid
(2) stud
140 Servicing Your Honda
(4)
(3) grommet
(4) tabs