Honda PIONEER 2022 Owner's Manual page 170

Fuel Capacity
Fuel tank capacity:
7.9 US gal (30 ℓ)
When there is only one segment left in the fuel gauge (page 33), fuel
will be low and you should refuel as soon as possible.
Refueling Procedure
Refer to Safety Precautions on page 137.
RIGHT SIDE
bottom of filler neck
1. Open the right side front door (page 63).
2. Turn the fuel fill cap counterclockwise.
3. Add fuel until the level reaches the bottom of the filler neck.
Avoid overfilling the tank. There should be no fuel in the filler
neck.
fuel fill cap
Servicing Your Honda
Fuel
161