Mercury Technical Database

Mercury 15hp (2-Stroke)

Name: Mercury 15hp (2-Stroke) Outboard Motor (1990)
Brand: Mercury
Availability: OutOfStock

15 HP 1990 2-Stroke Discontinued ✓ Service Data Verified

Smaller Model SeaPro 10hp

Current Model 15hp (2-Stroke)

Larger Model SeaPro 15hp

General Specifications

HP / kW 15 HP / 11.2 kW

Displacement 262 cc (16.0 cu in.)

Cylinders 2 (Inline)

WOT RPM 5000 - 6000

Weight 34 kg / 75 lbs

Drive & Lower Unit

Gear Ratio 2.0

Shaft Length 15", 20"

Electrical System

Alternator Output 60 Watts

Starting System Manual

Technical Maintenance Toolkit

Verified service specifications for the Mercury 15hp (2-Stroke) (1990)

Lubrication

Engine Oil

TC-W3 2-Stroke

Gearcase Lube 200 ml

Ignition System

Spark Plug

NGK BP8H-N-10

Firing Order 1-2-3-4

Performance Specs

Idle RPM 700 ± 50

WOT Range 5000-6000

Alternator 60W

Standard Maintenance Intervals

20H Break-in Service

100H Annual Tune-up

300H Water Pump & Seals

Identification

The serial number for the Mercury 15hp (2-Stroke) is typically found on a plate located on the transom bracket.

Technical Toolkit

Compare this 15HP engine → Identify your model year → Decode error codes → Propeller guide for this 15HP →

Maintenance Compatibility

These models share common service parts with the Mercury 15hp (2-Stroke):

Model Evolution

History of the Mercury 15HP series over the years:

2005 SeaPro 15hp

Category Discovery

All 15HP Motors Full Mercury Index 1990s Archive

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Reference Data

Information compiled from Mercury Marine factory service manuals and original sales literature published in 1990.