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Calling it a high-output outboard means Mercury can deliver peak power 10% higher than the rated horsepower and be in compliance with SAE standards. The company says it is designed for fiberglass and aluminum multi-species boats, bay boats, and pontoon boats. ## Key Features ## Specifications | Type of Engine | 4-Stroke | |---|---| | Number of Cylinders | | | Horse Power | 150 | | Configuration | In-line | | Weight | 456.00lbs | | Fuel Type | Gasoline | | Fuel Delivery | | | Shaft Length Options | 20" (508 mm) 25" (635 mm) | | Shift Throttle Control | | | Displacement | | | Steering Control | Cable | | Recommended Fuel | 87 Octane or 90 RON 10% Ethanol | | Alternator Output | | | CARB Rating | 3-Star | | Engine Monitoring System | | ## Captain's Report ![Mercury 150 Pro XS](/sites/default/files/images/news/mercury_150proxs_newoutboard_2018.jpg) The Mercury 150 Pro XS is designed for a variety of boats, but tournament anglers will like its light weight of 456 lbs. (207 kg).## Acceleration Mercury says the 150 Pro XS offers quick heavy-load acceleration from zero to 20 mph. The acceleration is likely helped in part by the outboard’s 456-pound (207 kg) weight as well as its 3.0-liter displacement, which Mercury says is the largest in the 150-hp category. Torque is important for good hole-shot times, and Mercury says its proprietary Transient Spark Technology optimizes the timing of the spark for improved performance. ![Mercury 150 Pro XS](/sites/default/files/images/news/mercury_150proxs_running_2018.jpg) When it comes to hole shot, high torque at the low end is important, and Mercury says the 150 Pro XS has features that optimize the torque.## Design Features Mercury gave the 150 Pro XS other features, such as a higher full-throttle RPM. Instead of 5800 rpm, the outboard will hit 6000, which increases the range of propeller pitches it can handle, according to the manufacturer. The outboard has a gearcase with 2.08:1 reduction, also delivering more torque to the prop shaft. In addition, the gearcase has four additional water pickups on the nose of the lower-unit torpedo as well as the standard pickups located on the sides. Mercury says this design enhances flexibility in mounting the engine and allows the use of a jackplate while also letting the user trim the engine more aggressively without a loss of engine-cooling water flow. ## Charging Power The 150 Pro XS has a charging output of 60 amps, and idle-charge battery management capability, the better to manage battery drain from onboard electrical and electronic components, according to the manufacturer. ![Mercury 150 Pro XS](/sites/default/files/images/news/mercury_150proxs_outboard_2018.jpg) Mercury says the 150 Pro XS has reduced vibration at the seat and helm compared to others in the 150-hp high-output segment.## Corrosion Protection The 150 Pro XS provides superior protection against corrosion, according to Mercury, which cites its use of proprietary ultra-low-copper alloys. This is a claim that is generally accepted as true in the industry. Mercury provides a standard three-year warranty against damage due to corrosion. ![Mercury 150 Pro XS](/sites/default/files/images/news/mercury_150proxs_running2_2018.jpg) The 150 Pro XS uses performance-tuned engine mounts that Mercury says improves handling at high speeds.## Specifications - HP / kW: 150 / 110 - Engine type: 8-valve single overhead cam (SOHC) Inline 4 - Displacement (CID/CC): 183 - Displacement (L): 3.0 - Full throttle RPM: 5200-6000 - Air induction: Performance-Tuned Scroll Intake Manifold - Fuel induction system: Computer Controlled Multi-Port Electronic Fuel Injection (EFI) - Recommended fuel: Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum - Recommended oil NMMA Certified FCW SAE 10W-30 - Engine protection operator warning system: SmartCraft Engine Guardian - Compatible with SmartCraft digital technology: Yes - Starting: Electric (turn-key) - Controls: Mechanical throttle & shift - Steering: Dual-cable mechanical hydraulic power steering - Shaft length: 20" / 508 mm, 25" / 635 mm - Dry weight (lb./kg): 456/207 - CARB star rating: 3 - Bore and stroke: 4.0" x 3.6" / 102mm x 92mm - Ignition: SmartCraft ECM 07 Digital Inductive - Cooling system: Water-cooled with thermostat - Gear shift: F-N-R - Trim system: Power Tilt/Power Trim - Exhaust system: Through prop - Oil Capacity: 6.3 qts / 6.0L - [Price Quote](/external-redirect/77786?target=ZmllbGRfZW5naW5lX3ByaWNlX3F1b3Rl) - [Builder Website](/external-redirect/77786?target=ZmllbGRfZW5naW5lX2NvbXBhbnlfcGFnZQ%3D%3D)