2006 Honda TRX680 Rincon Factory Service Manual, Page 351Get this manual
DRIVETRAIN SYSTEM All shift clutches Clean the inner surface of the clutch drum thorDRUM (1st, 2ndand3rd) oughly and blow through the oil holes in the drum use the following boss and check valve in the pistonproce urepp|y| O-rings and install them into the piston groovePlace the clutch piston into the clutch drum in the direction shown
Be careful not to Install the piston while turning it to ensure proper
pinch the O-rings seatingwith too much force
Place the following into the clutch drumreturn spring spring retainer snap ring