Honda CRF125F 2023 Owner's Manual page 75

Engine Oil
6. After the oil has drained, install the drain
bolt with new sealing washer and tighten to
the specified torque:
18 lbf·ft (24 N·m , 2.4 kgf·m)
7. Pour the recommended oil into the
crankcase, approximately:
0.9 US qt (0.85 )
8. Install the oil fill cap/dipstick securely.
9. Start the engine and let it idle for 3-5
minutes. Stop the engine. Wait 2-3 minutes.
66
Servicing Your Honda
10.With the motorcycle held upright on level
ground, check the oil level.
If needed, add oil (page 64) until it reaches
the upper level mark. (Do not overfill.)
11. Check for oil leaks.