If you are looking for a service bulletin for Continental engines published in the 40's you are out of luck. They don't have obsolete publications available, I know, I called.
I did locate a source of old Service Bulletins and other Continental publications available from the Cub Club for a nominal charge. The list follows along with instructions for ordering. The following items are available from the Cub Club, 6438 W. Millbrook Road, Remus, MI 49340-9625. Phone: 517-561-2393, Fax: 517-561-5101. Visa and Mastercard are accepted. Engine Publications Operator's Handbook for A50,65,75,80 & C75,85.....$10.00 Continental Maintenance/Overhaul Manual for C75,C85, C90, O-200A.....$20.00 Operation Manual & Service Maintenance for A,C,and O-200 Engines ....$10.00 Service Bulletin (MSA-2) on replacing venturi on MA3 & 4 carbs.....$2.00 Service Bulletin MSA-7 for replacing carb nozzle on O-200 w/one piece venturi.....$2.00 Service Bulletin (CF 1-92) on Marvel Schebler MA-3 & MA-4 floats......$2.00 Continental Service Bulletins Several to convert A65 to A75, C85 to C90, etc.....$15.00 M46-23 Valve Problems .....$2.00 M46-24 Preventing Oil leaks in A & C Series Rocker Box Covers.....$2.00 M46-25 Mag & Plug Gaps ......$2.00 M46-32 Update on M46-23 Valve Problems....$2.00 M47-9m Piston Pin Changes for C Series.....$2.00 M47-26 Crankshaft updates for A & C Series.....$2.00 M48-12 First 50 Hr. Check – Extra info to prevent oil leaks and parts breakage.....$2.00 M48-20 New Piston Pins/Plugs for A & C Series Engines .....$2.00 M48-29 Fuel & Oil Recommendations ......$2.00 M49-2 Cam & Filter Combinations for C90 ......$2.00 M49-4 C Series Generator Drive Coupling Changes .....$2.00 M49-15 A & C Series Valve Springs – ident & usage .....$2.00 M49-17 Cam Change for C90 .....$2.00 M63-5 Fuel & Oil Recommendations .....$2.00 M64-4 A & C Series Delco Remy Starter Adjustments .....$2.00 M76-4 Installation of Prop Shaft or Crank Oil Seals ......$2.00 M77-19 Ident of C Series & O-200 Exhaust Rocker Arms ......$2.00 M79-11 Starter Clutch & Crankcase Mod for O-200 .....$2.00 M88-11 Piston Comp Ring Table of Limits – C Series & O-200 .....$2.00 M86-9 Mod crank case when replacing P/N 530182 w/crank P/N 531434 (C90 & O-200) .....$2.00 M92-8 Installation of 4 1/16 inch dia cylinder assemblies for C series & O-200....$2.00 M93-13 Carb Air Box Inspections for C Series & O-200.....$2.00 M96-7 Continental Torque Limits .....$2.00 M96-11 Prop Strikes & Hydraulic Lock .....$2.00 Directions for Overhauling Carb Air Boxes......$2.00 .
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