Franklin Service Bulletins

Number of pages: 2Part Number: Service Bulletin No. 20Revision Date: 20-Aug-1942

Number of pages: 2Part Number: Service Bulletin No. 21Revision Date: 7-Dec-1942

Number of pages: 6Part Number: Service Bulletin No. 12Revision Date: 1-May-1941Description: Including: Fuel, Lubrication, Overhaul Periods, Warming up the Engines, Cruising, On Landings, Proper use of Altitude Control

Number of pages: 2Part Number: Service Bulletin No. 11Revision Date: 1-May-1941

Number of pages: 2Part Number: Service Bulletin No. 17Revision Date: 13-Feb-1942Description: Including: Crankcase Cover Oil Leak, Camshaft Gear, Sticking Valves, Valve Springs, Discard Used Lock Washers, Torque Wrench Specifications, Spark Plug Inserts

Number of pages: 2Part Number: Service Bulletin No. 16Revision Date: 16-Feb-1942

Number of pages: 2Part Number: Service Bulletin No. 13Revision Date: 16-June-1941Description: Fuel, Oil, Spark Plugs

Number of pages: 4Part Number: Service Bulletin No. 25Revision Date: 10-Aug-1944Description: Including: Conversion of Model 4AC-176-F3 (80 HP) Engine

Number of pages: 2Part Number: Service Bulletin No. 2Revision Date: 12-Dec-1939

Number of pages: 4Part Number: No. 24Revision Date: 8-April-1944Description: Including: Spark Plugs, Cylinder Removal, Prevention of Crankshaft Failure, Prevention of Piston Failure

Number of pages: 2Part Number: Service Bulletin No. 3Revision Date: 1-Feb-1940

Number of pages: 4Part Number: Service Bulletin No. 23Revision Date: 12-June-1943Description: Including: Spark Plug Inserts, Magnafluxing, Recommended Changes in Spark Advance, Valve Mechanism, Valve Spring Tension