Mercury Technical Database

Mercury 35hp (Inline-4)

Name: Mercury 35hp (Inline-4) Outboard Motor (1975)
Brand: Mercury
Availability: OutOfStock

35 HP 1975 2-Stroke Discontinued ✓ Service Data Verified

Smaller Model 30hp EFI (3-Cyl)

Current Model 35hp (Inline-4)

Larger Model 40hp (4-Cyl Carb)

General Specifications

HP / kW 35 HP / 26.1 kW

Displacement 650 cc (39.7 cu in.)

Cylinders 4 (Inline)

WOT RPM 4500 - 5500

Weight 68 kg / 150 lbs

Drive & Lower Unit

Gear Ratio 2.0

Shaft Length 15", 20"

Electrical System

Alternator Output 113 Watts

Starting System Electric

Technical Maintenance Toolkit

Verified service specifications for the Mercury 35hp (Inline-4) (1975)

Lubrication

Engine Oil

TC-W3 2-Stroke

Gearcase Lube 440 ml

Ignition System

Spark Plug

NGK BUHW (Surface Gap)

Firing Order 1-2-3-4

Performance Specs

Idle RPM 700 ± 50

WOT Range 4500-5500

Alternator 113W

Standard Maintenance Intervals

20H Break-in Service

100H Annual Tune-up

300H Water Pump & Seals

Identification

The serial number for the Mercury 35hp (Inline-4) is typically found on a plate located on the transom bracket.

Technical Toolkit

Compare this 35HP engine → Identify your model year → Decode error codes → Propeller guide for this 35HP →

Maintenance Compatibility

These models share common service parts with the Mercury 35hp (Inline-4):

Model Evolution

History of the Mercury 35HP series over the years:

Standalone production year.

Category Discovery

All 35HP Motors Full Mercury Index 1970s Archive

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Reference Data

Information compiled from Mercury Marine factory service manuals and original sales literature published in 1975.