Autolubrication Pump; Crankcase And Crankshaft - Yamaha YB50 Service Manual

DISASSEMBLY THE ENGINE

AUTOLUBRICATION PUMP

1. Remove:
• Autolubrication pump
2. Remove:
• Elastic circlip
• Pump drive gearing
• Pin
• Elastic circlip
3. Remove:
• Carburettor gasket
• Reed valve
• Reed valve gasket

CRANKCASE AND CRANKSHAFT

1. Remove:
• Oil seal catch
• Screws (crankcase)
NOTE:
Loosen each screw 1/4 of a turn and remove
them after loosening them.
2. Apply:
• Crankcase separation tool
NOTE:
Fully tighten the positioning nuts of the tool,
but ensure that the tool body is parallel with
the box. If necessary, slightly loosen one of
the screws to level the body of the tool.
4-9
ENG
Crankcase separation tool
90890-01135