Mercury Two stroke 20 25 30 40 45 50 55 60 Mariner Factory Service Repair Manual + Wirings

Price range: $39.00 through $48.00

Mercury Two stroke 20 25 30 40 45 50 55 60 Mariner Factory Service Repair Manual + Wirings

You can download this or I can ship it to you.

Loaded with Hi Resolution illustrations, instructions, photos, and diagrams, complete to service and repair your MERCURY.

Thousands of Pages

Medium

Clear

SKU: N/A Categories: Watercrafts/Boats, Mercury

Description
Additional information

Mercury Two stroke 20 25 30 40 45 50 55 60 Mariner Factory Service Repair Manual + Wirings

Loaded with illustrations, instructions, photos, and diagrams, complete to service and repair your Mercury.

Thousands of Pages

Models Covered :

20
20 JET
25
25 MARATHON
25 SEAPRO
30
30 MARATHON
30 SEAPRO
30 JET
40
40 MARATHON
40 SEAPRO
40 4 CYL
45 JET
50
55
55 MARATHON
55 SEAPRO
60
60 MARATHON
60 SEAPRO
60 BIG FOOT

With Serial Numbers:

United States 0G044027 and Above

United States 0C159200 and Above

United States 0G531301 and Above

United States 0D000750 and Above

Belgium 09807909 and Above

Belgium 09855139 and Above

Belgium 9570305 and Above

Belgium 09974454 and Above

Belgium 09671687 and Above

Canada 0A748269 and Above

Manual Covers :

Information:

Specifications
Maintenance
General Information
Outboard Installation

Electrical:

Ignition
Charging and Starting System
Timing, Synchronizing and Adjusting
Wiring Diagrams

Fuel System:

Fuel Pump
Carburetor
Oil Injection
Emissions

Powerhead:

Mid-Section:

Clamp/Swivel Brackets and Drive Shaft Housing
Power Trim

Lower Unit:

Lower Unit
Jet Drive

Attachments/Control Linkage

Manual Starter

This manual is the same as the manual used by workshops. Service Manual contains detailed instructions and step by step diagrams for all workshop procedures.

Language: English
Format: PDF – Indexed and Searchable

COMPATIBLE WITH ALL WINDOWS & MAC COMPUTERS
(WINDOWS 11, WINDOWS 10, WINDOWS 8 ETC.)

Windows/Mac/Tablet/Phone Friendly

Since Mercury ceased production of two-stroke outboards in 2006 for the U.S. market, engines from this era are no longer sold as new. However, many of these durable engines are still in use today and are valued for their simple mechanics, which makes them easier to service.

The Mariner brand of outboards was sold by Mercury until the mid-2000s and featured many identical components, so parts and service information for Mariner models can often be cross-referenced with comparable Mercury engines from the same period.

Key characteristics of Mercury two-stroke engines

20–30 horsepower

These engines were typically two-cylinder models, but displacement varied over the production years.

Design: Many were compact and lightweight, making them popular for smaller boats, jon boats, and as auxiliary power.
Fueling: Earlier models had carburetors, while later two-strokes (before the line was discontinued) featured Electronic Fuel Injection (EFI) for better performance and fuel economy.
Maintenance

: Common issues can include carburetor flooding or clogged jets, especially after prolonged storage. Fuel filters and spark plugs require regular maintenance.

40–60 horsepower

These were often two- and three-cylinder engines known for a solid balance of power and portability.

Design: Models like the 40 HP Classic Fifty were a popular choice during their time and can still be found on used boats.
Variations: The horsepower was sometimes shared across different models. For example, some two-cylinder 55 HP models shared the same block as 60 HP twins, making many parts interchangeable.
Controls

: Many were tiller models, but remote steering options were also common.
Troubleshooting: Common problems can include fuel pump issues, especially for older engines. Weak or dirty carburetors can cause rough idling, stalling, or loss of power.

Common maintenance and troubleshooting tips

Because these engines are no longer in production, parts are often sourced from aftermarket suppliers or salvaged from used engines.

Fuel system: For hard-starting issues, check the fuel pump, lines, filters, and carburetor jets for clogs or leaks. Replacing old fuel and using a stabilizer is critical for engines that are stored.
Ignition system: Faulty or worn-out spark plugs are a frequent cause of poor performance. Issues with the stator, trigger, and ignition coil can cause starting problems.
Cooling system

: Overheating can be caused by a worn-out water pump impeller or a blocked cooling system. Impellers should be replaced regularly to prevent failure.
Parts interchangeability: For Mariner models, many original parts will be stamped with both Mercury and Mariner branding, or can be cross-referenced to a Mercury equivalent.

Parts availability

Since production ceased many years ago, the availability of parts varies. Many common components are still available from aftermarket suppliers, while specialized parts may be harder to find.

Fuel pumps: A replacement fuel pump is available on eBay for a wide range of two-stroke Mercury and Mariner models, including 30, 40, 45, 50, 55, and 60 HP.
Engine oil: Mercury Precision Lubricants Premium 2-Cycle Outboard Oil is sold by various online marine supply stores.