2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 115Get this manual
LUBRICATION SYSTEM Ap ply oil to new -rings and inst all th em on to the il pass pipeIn st all he il pass pipe 10 he oil stra iner pipe
Coal new O-rin with oil an install th em onto th oil joint pipes
Install th oil pu mp drive chain onto th driv en sproc ket of th oil pu p, an install th oi pum nto th crankc ase