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    External Oil Pipes

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

    $6.00
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    Camshaft Gears

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

    $6.00
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    Crankcase Cover Oil Leaks

    Document Part Number: Service Bulletin No. 17
    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

    $6.00
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    Air Cleaner

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

    $6.00
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    Recommended Change in Spark Advance

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

    $6.00
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    Crankshaft Regrinding

    Document Part Number: Service Bulletin No. 23
    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

    $6.00