ESS00017 ALL REPLACEMENT PARTS We recommend using genuine Yamaha parts for all replacements. Use oil and grease recom- mended by Yamaha for assembly and adjust- ments. ESS00018 GASKETS, OIL SEALS, AND O-RINGS 1. All gaskets, seals, and O-rings should be re- placed when an engine is overhauled. All gasket surfaces, oil seal lips, and O-rings must be cleaned. 2. Properly oil all mating parts and bearings during reassembly. Apply grease to the oil seal lips. ESS00019 LOCK WASHERS/PLATES AND COTTER PINS All lock washers/plates 1 and cotter pins must be replaced if they are removed. Lock tab(s) should be bent along the bolt or nut flat(s) after the bolt or nut has been properly tightened.
ESS00020 BEARINGS AND OIL SEALS Install the bearings 1 and oil seals 2 with their manufacturer’s marks or numbers facing out- wards. (In other words, the stamped letters must be on the side exposed to view.) When installing oil seals, apply a light coating of light- weight lithium base grease to the seal lips. Oil the bearings liberally when installing. CAUTION: Do not use compressed air to spin the bear- ings dry. This causes damage to the surface of the bearings. 1-3 IMPORTANT INFORMATION GEN INFO