2006-2014 Honda FourTrax ATV TRX250 EX TRX250X Service Manual, Page 64Get this manual
MAINTENANCE Remove the oil filler capdipstick and check the oil levelThe engine contains sufficient amount of oil if the oil level is between the upper and lower level marks on the dipstickIf the oil level is near or below the lower level mark, add the recommended engine oil to the upper level markRECOMMENDED ENGINE OIL: and CM types: Pro Honda GN4 4-stroke oil (U.S.Aand Canada) or equivalent motor oil API service classification: SG or higher JASO 903 standard: MA Viscosity: SAE 10W-30 type: Honda "4-stroke motorcycle oilor an equivalent API service classification: SG or higher (except oils labeled as energy conserving on the circular API service label) Viscosity: SAE 10W-30 JASO 903 standard: MA Other viscosities shown in the chart may be used when the ave rage temperature in your riding area is within the indicated rangeReinstall he oil filler capdipstick