2006 Honda TRX680 Rincon Factory Service Manual, Page 527Get this manual
ELECTRIC STARTER 7Starter Relay Switch Inspection Check the function of the starter relay switch (page 22-13)Does the starter relay switch function properly? NO YESFaulty starter relay switch- Loose or poor contact of the starter relay switch connector terminal
Starter motor turns engine slowly Low battery voltage Poorly connected battery cable Poorly connected starter motor cable Faulty starter motor Poorly connected ground cable terminal Starter motor turns, but engine does not turn Faulty starter clutch Damaged starter gear train Starter relay switch clicks, but engine does not turn over Crankshaft does not turn due to engine problems