General Specifications
HP / kW
150 HP / 111.8 kW
Displacement
2507 cc (153.0 cu in.)
Cylinders
6 (V6 60°)
WOT RPM
5000 - 5500
Weight
184 kg / 406 lbs
Drive & Lower Unit
Gear Ratio
1.87:1
Shaft Length
20, 25
Electrical System
Alternator Output 480 Watts
Starting System Electric
Technical Maintenance Toolkit
Verified service specifications for the Mercury 150hp Black Max (1990)
Lubrication
Engine Oil
TC-W3 (50:1)
Gearcase Lube 665 ml
Ignition System
Spark Plug
NGK BUHW
Gap Setting 0.040"
Firing Order 1-2-3-4
Performance Specs
Idle RPM 700 ± 50
WOT Range 5000-5500
Alternator 480W
Standard Maintenance Intervals
20H Break-in Service
100H Annual Tune-up
300H Water Pump & Seals
Identification
The serial number for the Mercury 150hp Black Max is typically found on a plate located on the transom bracket.
Technical Toolkit
Maintenance Compatibility
These models share common service parts with the Mercury 150hp Black Max:
Model Evolution
History of the Mercury 150HP series over the years:
Category Discovery
Reference Data
Information compiled from Mercury Marine factory service manuals and original sales literature published in 1990.