4. LUBRICATION SYSTEM MXU 550EXi/MXU500i Bolts/Washers (on the oil pipe) OIL PIPE REMOVAL/INSTALLATION REMOVAL Remove the two bolts, washers (on the oil pipe), oil pipe and washers (under oil pipe). Oil Pipe/Washer (under oil pipe) Washers INSTALLATIION Install the inner washers on the right crankcase. Thick Side Install the oil pipe with the thick side face upward. Oil Pipe 4-15