🏷️ Basic Information Identification Make: MerCruiser Model: GM 4 Cylinder 181 cid (3.0L) Marine Engines Year: Not Specified (Manual for a range of models) Generation: Not Applicable 📋 Manual Details Publication Info Manual Type: Service Manual Manual Number: 26 - Improved Language: English Format: Download PDF Content Features Content Description: Complete Factory Service Manual with detailed diagrams and manufacturer specifications. ⚙️ Engine Specifications Engine Configuration Engine Type: Inline 4-Cylinder Displacement: 181 cubic inches Displacement Liter: 3.0L Engine Performance Bore: Not Specified (Engine Specific) Stroke: Not Specified (Engine Specific) Compression Ratio: Not Specified (Engine Specific) Fuel System Fuel Type: Gasoline Ignition System Ignition Type: Not Specified (Engine Specific) 🔧 Transmission Drive System Drive Type: Marine Sterndrive/Inboard (Dependent on application) Transmission Details Transmission Type: Not Specified (Manual covers various applications) Number Of Gears: Not Applicable (Marine Drive System) 📐 Dimensions Physical Dimensions Engine Length: Not Specified (Engine Specific) Engine Width: Not Specified (Engine Specific) Engine Height: Not Specified (Engine Specific) Engine Weight: Not Specified (Engine Specific) 🔧 Maintenance Fluid Specifications Oil Type: Not Specified (Recommended in manual) Oil Capacity: Not Specified (Engine Specific) Maintenance Schedule Recommended Service Intervals: Detailed within the manual