2001-2003 Honda TRX500FA Factory Service Manual, Page 358Get this manual
LIGHTSMETER SWITCHES Suspend he oi hermosen sor in pan of eng ine oil on an electr ic heating eleme nt and easure he resistance hro ugh he senso as the oil heats up THERM OMETER
Soak the thermosensor in oil up to its threads with at least 40 mm (1.57 in) from the bottom of the pan to the bottom of he sensorKeep the temperatu re constant fo minutes before testingA sud en change of te perat ure will result in incorrect readi ngs Do not let he the rmometer herm sensor ouch th pan Tem perat ure Resistance
OIL THERM OSEN SOR
306-340 n
209-23111
Replace the oil thermosensor if it is out of specifications by more tha 10 at any temperat ure list edInsta ll he oil he rmosensor it new sealing was her and ti ghten itTORQU E: 18 "m .a kgtm13 IbHtI Connect the thermosensor connectorInstall he rem oved parts in the rever se order of rem ova l