Mercury 150 ProMax 2-stroke specs
| Engine Model: Mercury Pro Max 150 Hp |
| Engine Type: 2-stroke 6-cylinder gasoline outboard engine |
| Total Displacement: 153 cu.in (2507 cc) |
| Rated Engine Power: 150 Hp (111.8 kW) at 6500 rpm |
| Fuel System: Electronic fuel injection (EFI) |
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Engine Model .............. Mercury Pro Max 150 Hp
Engine Type .............. 2-stroke 6-cylinder gasoline outboard engine
Number of Cylinders .............. Six
Displacement, cu.in (cc) .............. 153 (2507)
Cylinder Bore, in (mm) .............. 3.50 (88.9)
Piston Stroke, in (mm) .............. 2.65 (67.3)
Maximum Engine Power, hp (kW) .............. 150.0 (111.8)
Maximum Engine Speed, rpm .............. 6200-6500
Idle Speed, rpm .............. 650±50
Firing Order .............. 1-2-3-4-5-6
Ignition System .............. Capacitor discharge
Starting System .............. Manual Start / Electric Start
Electrical System Rating, Volts .............. 12
Charging System .............. Alternator
Alternator Rating, Amps .............. 40
Outboard Weight, lbs (kg) .............. 350 (159)
Fuel System Type .............. Electronic fuel injection (EFI)
Number of Injectors .............. 6
Fuel Pump Type .............. Pulse
Fuel Filter Type .............. Water separator
Engine Control .............. Electronic
Fuel Type .............. Gasoline with oil injection
Recommended Gasoline .............. Unleaded gasoline (89 octane minimum)
Recommended Oil .............. Quicksilver or Mercury Precision Lubricants TC-W3
Operating Fuel/Oil Ratio .............. 50:1
Injector Line Pressure, psi (kPa) .............. 34-36 (234-248)
Gear Ratio .............. 2.00:1
Number of Teeth (Forward Gear) .............. 28
Number of Teeth (Reverse Gear) .............. 14
Pinion Height, in (mm) .............. 0.025 (0.64)
Forward Gear Backlash, in (mm) .............. 0.015-0.022 (0.381-0.558)
Reverse Gear Backlash, in (mm) .............. 0.030-0.050 (0.762-1.27)
Water Pressure / RPM, psi (kPa) .............. 12 (82.2) / 5500
Transom Height (Short Shaft), in (mm) .............. 15 (380)
Transom Height (Long Shaft), in (mm) .............. 20 (510)
Power Trim (Total Tilt Range), deg .............. 75
Power Trim (Tilt Range), deg .............. 20
Tilt Pin Adjustment Positions .............. 5
Steering System ................ Tiller handle or remote control
Steering Pivot Range, deg .............. 60
Allowable Transom Thickness (Max), in (mm) .............. 2.37 (60.3)
Cylinder Block Type .............. V6, 2-cycle, loop charged
Cylinder Bore Type .............. Cast iron
Cylinder Compression, psi (kPa) .............. 110-135 (753-925)
Cylinder Bore Inside Diameter (Std), in (mm) .............. 3.501 (88.925)
Cylinder Bore Inside Diameter (Max), in (mm) .............. 3.503 (88.975)
Cylinder Bore (Max Out of Round), in (mm) .............. 0.003 (0.076)
Cylinder Bore (Max Taper), in (mm) .............. 0.003 (0.076)
Crankshart Runout (Maximum), in (mm) .............. 0.006 (0.152)
Piston Type .............. Aluminum
Piston Outside Diameter (Std), in (mm) .............. 3.494 (88.748)
Piston Outside Diameter (Wear Limit), in (mm) .............. 3.492 (88.697)
Reed Type .............. 2-stage, plastic
Reed Stop .............. No Stop
Engine Fuel Type .............. Unleaded 89 octane minimum
Engine Oil Type .............. Quicksilver TC-W3 2-cycle outboard oil
Engine Oil Capacity, gal (L) .............. 3.0 (11.4)
Lubricant Type .............. Quicksilver gear lube premium blend
Gearcase Capacity, qts (L) .............. 0.71 (0.67)
Fuel Filter/Water Separator Part Number .............. 35-18458Q4
Idle Mixture Screw .............. Not Adjustable
Low Idle Speed, rpm .............. 650±50
Wide Open Throttle, rpm .............. 6200-6500
Injector Resistance, ohms .............. 12.3±0.5
Electric Fuel Pump Resistance, ohms .............. 0.7±0.3
Electric Fuel Pump Amperage Draw, ohms .............. 4±0.5
Spark Plug Type .............. NGK BU8H
Spark Plug Gap, in (mm) .............. 0.040 (1.0)
Idle Timing .............. Not adjustable, controlled by ECM
Maximum Timing .............. Not adjustable, controlled by ECM
Throttle Position Sensor .............. Not adjustable, controlled by ECM
Lubricate all lubrication points .............. Every 100 hours
Inspect and clean spark plugs .............. Every 100 hours
Check fuel filter/water separator .............. Every 100 hours
Check carburetor adjustments .............. Every 100 hours
Check corrosion control anodes .............. Every 100 hours
Drain and replace gear case lubricant .............. Every 100 hours
Lubricate splines on the drive shaft .............. Every 100 hours
Inspect battery condition .............. Every 100 hours
Check EFI electrical system and ECM .............. Every 100 hours
Check final fuel filter .............. Every 100 hours
Check induction manifold leak .............. Every 100 hours
Check power trim fluid .............. Every 100 hours
Check and adjust carburetor .............. Every 100 hours
Check engine timing setup .............. Every 100 hours
Check control cable adjustments .............. Every 100 hours
Check tightness of bolts, nuts, and other fasteners .............. Every 100 hours
Replace water pump impeller .............. Every 100 hours
Replace fuel filter/water separator .............. Every 300 hours
Cylinder Block Cover Screw, Nm (ft-lb) .............. 23.5 (17.5)
Crankcase Cover Bolts, Nm (ft-lb) .............. 51.5 (38)
Exhaust Cover Bolts, Nm (ft-lb) .............. 20.3 (15)
Cylinder Head Bolts, Nm (ft-lb) .............. 40.5 (30)
Connecting Rod Bolts, Nm (ft-lb) .............. 40.5 (30)
Crankcase Cover Bolts, Nm (ft-lb) .............. 17 (12.6)
Fuel Pump Screw, Nm (ft-lb) .............. 8.1 (6.1)
Thermostat Screw, Nm (ft-lb) .............. 22.5 (16.5)
Crankshaft Drive Gear Screw, Nm (ft-lb) .............. 1.0 (0.75)
Steering Link Assembly, Nm (ft-lb) .............. 27 (20)
Drive Shaft Housing Nut, Nm (ft-lb) .............. 65 (48)
Gear Housing Screw, Nm (ft-lb) .............. 7 (5)
Electric Fuel Pump to Separator Cover, Nm (ft-lb) .............. 1.35 (1.0)
Separator Cover to Separator Tank, Nm (ft-lb) .............. 2.5 (1.9)
Induction Manifold Assembly to Engine, Nm (ft-lb) .............. 10 (7.5)
Oil Reservoir to Engine, Nm (ft-lb) .............. 3 (2.2)
Propeller Nut, Nm (ft-lb) .............. 75 (55)
Spark Plug, Nm (ft-lb) .............. 27 (20)
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