1974 Ski-Doo Shop Manual, Page 116Get this manual
640 ENGINE TYPE
BOTTOM END
72 45Crankshaft "0" ring Woodruff kev Needle bearing Ball bearing
6Retaining disc
8Oil seal required) Shim (as 9Washer70Spring77Breaker point cam 72 73 747576 f19
Lock washerIJ ' Magneto retainmg Distance sleeve 20 Starter gear Ot! drain screw Sealing ring 78Lower crankcase half 79Upper crankcase half 20Crankcase stud (9 short) 27Crankcase stud (7 medium) 22 Crankcase stud (2 long) 23 Dowelpin 24Fan housing stud (4)
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