4. LUBRICATION SYSTEM VITALITY 50 INSTALLATION · Lubricate the O-ring (1) with grease or engine oil before installation. · Make sure that the oil pump is inserted into the crankcase. · Apply molybdenum disulfide or grease to the pump pinion. Install the oil pump into the crankcase. Install the oil pump control cable plate (1) and tighten the two bolts. Connect the oil inlet line (1) and oil outlet line (2) properly. Connect the oil pump control cable (3). Bleed air from the oil pump. 4-6