The initial carburetor settings for the Ariens ST504 snowblower with a 5hp engine (model 932006) typically involve setting the idle speed screw to about 1.5 turns out from a fully closed position and the mixture screw to around 1 to 1.5 turns out. However, it's essential to refer to the owner's manual for exact specifications, as these settings can vary based on specific conditions and modifications. Always ensure the engine is warm and running before making adjustments.