BALANCER GEARS AND OIL PUMP GEARS ............................................4-49 REMOVING THE BALANCER DRIVEN GEAR AND OIL PUMP DRIVEN GEAR.......................................................................................4-51 CHECKING THE OIL PUMP DRIVE .......................................................4-51 CHECKING THE BALANCER DRIVE.....................................................4-51 INSTALLING THE BALANCER DRIVE GEAR, BALANCER DRIVEN GEAR, AND OIL PUMP DRIVEN GEAR................................................4-52 PRIMARY AND SECONDARY SHEAVES ....................................................4-53 PRIMARY SHEAVE.................................................................................4-55 SECONDARY SHEAVE ..........................................................................4-56 REMOVING THE PRIMARY AND SECONDARY SHEAVES.................4-57 DISASSEMBLING THE SECONDARY SHEAVE....................................4-57 CHECKING THE PRIMARY SHEAVE ....................................................4-58 CHECKING THE SECONDARY SHEAVE..............................................4-58 ASSEMBLING THE PRIMARY SHEAVE................................................4-59 ASSEMBLING THE SECONDARY SHEAVE..........................................4-60 INSTALLING THE PRIMARY AND SECONDARY SHEAVES................4-62 CLUTCH ........................................................................................................4-63 REMOVING THE CLUTCH .....................................................................4-65 CHECKING THE CLUTCH......................................................................4-66 INSTALLING THE CLUTCH....................................................................4-67 CRANKCASE ................................................................................................4-68 TIMING CHAIN AND OIL FILTER...........................................................4-68 CRANKCASE ..........................................................................................4-70 CRANKCASE BEARINGS.......................................................................4-71 SEPARATING THE CRANKCASE..........................................................4-72 CHECKING THE TIMING CHAIN AND GUIDE.......................................4-72 CHECKING THE RELIEF VALVE ...........................................................4-72 CHECKING THE BEARINGS..................................................................4-73 CHECKING THE CRANKCASE..............................................................4-73 ASSEMBLING THE CRANKCASE..........................................................4-73 INSTALLING THE SHIFT LEVER ...........................................................4-74 CRANKSHAFT AND OIL PUMP ...................................................................4-75 OIL PUMP ...............................................................................................4-76 REMOVING THE CRANKSHAFT ...........................................................4-77 CHECKING THE OIL PUMP ...................................................................4-77 CHECKING THE OIL STRAINER ...........................................................4-78 CHECKING THE CRANKSHAFT............................................................4-78 ASSEMBLING THE OIL PUMP...............................................................4-79 INSTALLING THE CRANKSHAFT..........................................................4-79 ENG