🏷️ Basic Information Identification Make: Sea-Doo Model: Challenger Year: 1999 📋 Manual Details Information Manual Type: Factory Service Repair Manual Language: English Page Count: Hundreds Format: PDF Download ⚙️ Engine Specifications Engine Details Engine Type: Rotary (Rotax) Displacement: 717cc (for 717 engine) Power: Approximately 85 HP (for 717 engine) Cooling System: Closed-loop cooling system Fuel System Fuel Type: Unleaded gasoline Ignition System Ignition Type: CDI (Capacitor Discharge Ignition) 🔧 Transmission Drive System Type: Direct Drive Impeller Type: Axial flow jet pump 📐 Dimensions Hull Dimensions Length: Approximately 19 ft (5.79 m) Width: Approximately 7.5 ft (2.29 m) Weight: Approximately 1,700 - 1,900 lbs (771 - 862 kg) dry weight 🔧 Maintenance Oil And Lubrication Engine Oil Type: TC-W3 certified 2-stroke oil Oil Capacity: Refer to manual for specific oil mixture ratio or injection system capacity Fuel System Fuel Recommendation: 87 Octane Unleaded Gasoline Cooling System Coolant Type: Proprietary Sea-Doo coolant or equivalent Ignition System Spark Plug Type: NGK BR8ES or equivalent General Maintenance Battery Type: 12-Volt Marine Battery