2004 John Deer Buck Utility ATV 500, 500EX and 500EXT Service Manual, Page 43Get this manual
Go to step 10 Call the Field Service RepresentativeGo to next stepProblem is internal, first inspect the shift linkage under the stator coverIf nothing is found, proceed into transmission and check shift drum, shift forks and gearsProblem solved
Go to next stepProblem solved
Go to step 4Perform T-harness test from the electrical symptom flowSee "Diagnosing Electrical Components" on page 40, step 9Go to next stepGo to next stepProceed to "Diagnosing Electrical Components" on page 40Go to step 6Go to next stepOil pressure test must be performed with warm engine and the recommended viscosity oilRemove the oil pressure switchBe sure all connections are tightVehicle in neutral and emergency brake applied, start engine, press the shift button with engine at idle (May require multiple shift selections to achieve dog on dog, to be able to see the pressure on the gauge you will need to create miss shift, or dog on dogOtherwise the gauge will not react fast enough to show the quick spike in pressure should see 60 psi to 120 psiNow rev engine to 3000 RPM and press shift button againYou should see from 100 PSI to 130 PSI (same multiple shift selection procedure applies)Go to next step Go to step 8