Hercules Maintenance & Pilots Manual
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Hercules QX Series Six Cylinder Engine Parts List
$4.95 -
Hercules QX Series Six Cylinder Engines Operation and Maintenance Manual 1948
$4.95 -
Hercules QXA5, QXB5, QXC5 Six Cylinder Engines Specifications, Installation Diagram & Power Chart
$4.95 -
Wellington III, X, XI, XII, XIII & XIV Two Hercules XI, VI, XVI or XVII Engines Pilot’s Notes
$2.95