2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 108Get this manual
LUBRICATION SYSTEM
OIL PRESSURE CHECK
FarUfo to wmm Ie engine wIll cause very fJrgh 011 pres Sull! 1lMllmgs[xems! leaks WIll muse low OIl pres511ft! 18iJdm!)s _
Check he il lev el and ad he recommended il if necessary (page 4-10)A lsowarm the engine to normal operating te mperature and check for ex ternal leak sRemove the oil gall ery sealing bolt and washer on
the left side of the front crankcase cover NOTE Clean aro und the seali ng bolt ith co pre ssed
air bef ore removing the bole, and be su re that no
dirt ente rs the oil gallery
Connect an oil ressu re gauge and ad apter to th il
gallery ho leTOOLSPres sure gauge set