🏷️ Basic Information Identification Make: Suzuki Model: DF90/100/115/140 Generation: K1-K9 📋 Manual Details Publication Manual Type: Service/Workshop Manual Language: English Format: PDF ⚙️ Engine Specifications Engine Configuration Engine Type: 4-stroke, DOHC, 16-valve, 4-cylinder Displacement Displacement: 1502 cc (90/100 HP), 1800 cc (115/140 HP) Power Output Power Hp: 90, 100, 115, 140 Fuel System Fuel Delivery: Multi-point Sequential Electronic Fuel Injection Ignition System Ignition System: Suzuki PEI (Pointless Electronic Ignition) Cooling System Cooling System: Water-cooled 🔧 Transmission Gear Reduction Gear Ratio: Varies by model (e.g., 2.27:1 for DF90, 2.00:1 for DF140) Operation Shift Control: Remote control (Forward-Neutral-Reverse) 🔧 Maintenance Lubrication Recommended Oil Type: Suzuki Marine Engine Oil (API SE, SF, SG, SH, SJ, SL, SM, SN or higher) Oil Capacity: Approx. 4.7 L (5.0 US qt) with filter change (varies slightly) Routine Service Spark Plug Type: NGK CR9EIX / CPR9EA-9 (or equivalent) Thermostat Replacement Interval: Recommended every 2 years or as needed 📄 Performance Trim Tilt Trim System: Power Trim and Tilt Propeller Propeller Shaft: Splined 📄 Electrical Charging System Alternator Output: 27A Ignition Starting System: Electric Start 📄 Exhaust System Exhaust System: Through Prop Hub Exhaust 📄 Cooling Water Intake Water Intake Location: Below waterline