Honda FourTrax Recon TRX250TM 2019 Owner's Manual page 102

Fuel
Fuel Capacity
Fuel tank capacity, including reserve:
2.40 US gal (9.1 ℓ)
Reserve capacity:
0.63 US gal (2.4 ℓ)
The tank should be refilled as soon as possible after switching to
reserve, and the fuel valve should be returned to the ON position
after refueling to avoid running out of fuel with no reserve.
Refueling Procedure
Refer to Safety Precautions on page 79.
(1) fuel fill cap
(2) breather tube
92 Servicing Your Honda
(3)
(2)
(4)
(1)
(3) handlebar cover hole
(4) bottom of filler neck