3-74 ENGINE ENGINE REASSEMBLY • Reassemble the engine in the reverse order of disassembly. • The following steps require special attention or precautionary measures should be taken. NOTE: Apply engine oil to each running and sliding part before reas- sembling. • Be sure to install the following items to the crankcase. * Crankshaft journal bearing (3-69) * Gearshift fork (3-59) * Gearshift fork shaft (3-59) * Gearshift shaft bearing (3-58) * Gearshift cam bearing (3-58) * Gearshift cam (3-58) * Bearing retainer (3-59) * Oil jets (3-60) PISTON RING • Install the piston rings in the order of oil ring, 2nd ring and 1st ring. • The first member to go into the oil ring groove is a spacer 1. E After placing the spacer, fit the two side rails 2. L NOTE: P Side designations, top and bottom, are not applied to the spacer and side rails: you can position each either way. M  A S When installing the spacer, be careful not to allow its two ends to overlap in the groove. A INCORRECT B CORRECT • Install the 2nd ring 3 and the 1st ring 4 to the piston. NOTE: 1st ring and 2nd ring differ in shape.