2017 Mercury 15 HP 15MH Outboard Motor

Pull-cord starting on a 15-inch shaft is the formula behind Mercury's 2017 15MH, a 15 HP tiller outboard built around a four-stroke, 21.4-cubic-inch powerhead. Skipping electric start keeps weight down at the transom, which owners of smaller jon boats, dinghies, and inflatables often prefer over the added bulk of a battery and starter motor. Charging and electrical Unlike some manual-start 15 HP motors in this lineup that leave charging as an optional add-on, this 2017 model includes a 12-amp, 138-watt alternator standard, so it can keep a small battery topped off for electronics even without electric start. Full throttle lands between 5400 and 5600 RPM, and the carbureted engine pulls fuel through a 6.6-gallon external tank. Build and coverage Saltwater-rated construction, a 2.15:1 gearcase, and a 3-blade aluminum propeller round out the mechanical side. Mercury positions this motor as a lower-cost way into the 15 HP class and backs it with a three-year factory warranty, and the tiller grip includes adjustable steering tension for a tighter or looser feel at the helm. Does it charge a battery without electric start? Yes, the standard 12-amp, 138-watt alternator can keep a small battery charged. What shaft length is this? The 15-inch short-shaft version. Is the tilt power-assisted? No, both trim and tilt are hand-adjusted on this particular engine. Specifications Model 15MH Model Year 2017 SKU 15MH-17 Weight 115.0000 Manufacturer Mercury Country of Manufacture Japan Horsepower 15hp Shaft Length 15″ (Short) Steering Tiller Starting Manual Trim & Tilt Manual Fuel Delivery Carburetor Fuel Tank External Cylinder(s) 2 Displacement 21.4 / 351 Bore and Stroke 2.40 x 2.36in Full Throttle RPM Range 5400-5600 Ignition System CDI w/electronic spark advance Induction Scavenging SOHC Valves per Cylinder 2 Fuel Type 87 octane/up to 10% ethanol Fuel Tank / Fuel Line 6.6 / 25 Oil Type SAE 10W-30 (Mercury 4-Stroke Outboard Oil) Oil Capacity 1 Quart (1000 ml) Lubrication Trochoid Pump Alternator 12 amp / 138 watt (Electric) Cooling System Water-Cooled, Thermostatically Controlled Saltwater Rated YES Gear Ratio 2.15:1 Gear Shift Forward-Neutral-Reverse (shift in tiller handle) Propeller 9.2″ Diameter X 9.8″ Pitch 3-Blade Aluminum Internal Battery No