Force Technical Database

Force 120hp EFI

Name: Force 120hp EFI Outboard Motor (1998)
Brand: Force
Availability: OutOfStock

120 HP 1998 2-Stroke Discontinued ✓ Service Data Verified

Smaller Model 120hp (2-Stroke)

Current Model 120hp EFI

Larger Model 150hp (5-Cyl 2-Stroke)

General Specifications

HP / kW 120 HP / 89.4 kW

Displacement 1603 cc (97.8 cu in.)

Cylinders 4 (Inline)

WOT RPM 4750 - 5250

Weight 138 kg / 304 lbs

Drive & Lower Unit

Gear Ratio 2.00:1

Shaft Length 20", 25"

Electrical System

Alternator Output 192 Watts

Starting System Electric

Technical Maintenance Toolkit

Verified service specifications for the Force 120hp EFI (1998)

Lubrication

Engine Oil

50:1 Pre-mix

Gearcase Lube 440 ml

Ignition System

Spark Plug

NGK BUHX

Firing Order 1-2-3-4

Performance Specs

Idle RPM 700 ± 50

WOT Range 4750-5250

Alternator 192W

Standard Maintenance Intervals

20H Break-in Service

100H Annual Tune-up

300H Water Pump & Seals

Identification

The serial number for the Force 120hp EFI is typically found on a plate located on the transom bracket.

Technical Toolkit

Compare this 120HP engine → Identify your model year → Decode error codes → Propeller guide for this 120HP →

Maintenance Compatibility

These models share common service parts with the Force 120hp EFI:

Model Evolution

History of the Force 120HP series over the years:

1995 120hp (2-Stroke)

Category Discovery

All 120HP Motors Full Force Index 1990s Archive

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Reference Data

Information compiled from Force Marine factory service manuals and original sales literature published in 1998.