23. Lift the crankshaft free from the top half of the crankcase and slide the crankshaft oil seals off the crankshaft. Account for the C-ring. Remove the four bearing dowel pins.
Fig. 2-89
24. Remove the oil-injection pump driveshaft from the lower crankcase half. Account for the thrust washer on the outer end of the shaft. Fig. 2-87
AN050
28. Using a sharp, pointed tool, pry the seal ring from the backside of the water pump impeller. Fig. 2-90
AN047
NOTE: Do not replace the inner seals unless the water pump shows signs of leaking coolant out of the small bleed hole in the bottom half of the crankcase. If a water pump seal is to be replaced, use the Water Pump Bearing and Seal Kit (p/n 0644-084) and see Cleaning and Inspecting Engine in this section.
25. Place the crankcase on the bench with the water pump side down. Using the long seal driver, drive the water pump seal from the crankcase.
AN051
Fig. 2-88
Disassembling Engine (500/580/600 cc Twin Models)
NOTE: On the 580 cc, remove the ignition timing sensor from the magneto housing.
1. Using the spanner wrench to secure the flywheel, remove the flywheel nut, lock washer, and flat washer; then remove the three starter pulley cap screws and remove the pulley. AN049
26. Remove the snap ring securing the inner seal in the crankcase. 27. Using the hooked end of the tool, pull the inner seal free of the crankcase.
2-22