Mercury 8.0 User Manual
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Mercury 8.0 User Manual

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See also: Owner's Manual , Operation & Maintenance Manual
GB
Proper care and regular maintenance is an important part
in keeping your Mercury Product operating at peak efficien-
cy for maximum performance and economy. The enclosed
Owner's Registration Card is your key to trouble-free family
fun. Refer to your «Operation and Maintenance Manual» for
full details of your warranty coverage.
Bienvenue à bord!
F
Il convient de prendre soin de son matériel Mercury et de
l'entretenir
régulièrement
afin
performaces et un rendement optimaux.
La carte d'inscription du propriétion du propriétaire
ci-include vous garanitit des loisirs en famille sans soucis.
Reportez-vous au manuel d'utilisation et de maintenance
pour obtenir de plus amples informations sur votre garantie.
Welkom aan boord!
NL
Een juiste behandeling en regelmatig onderhoud zijn een
belangrijk gegeven om uw Mercury product optimaal te laten
fungeren voor maximum prestaties en economisch gebruik.
De bijgesloten eigenaars Registratiekaart is de sleutel tot
probleemloos vaarplezier. Raadpleeg uw «Operation and
Maintenance Manual» voor een volledige beschrijving van
gebruik en onderhoud.
Benvenuti a bordo!
I
Un uso appropriato ed una manutenzione regolare sono
garanzia di perfetta efficienza del vostro prodotto Mercury
per ottenere il massimo rendimento con consumi ottimali.
L'accluso tagliando di registrazione è la chiave per risolvere
i problemi tecnici ove si presentassero. Consultate il
manuale d'uso e manutenzione per tutti i dettagli sulla
garanzia.
Willkommen an Bord!
D
Sorgfältige Behandlung und regelmäßiger Kundendienst
sind eine wichtige Voraussetzung, um die dauernde
Funktionstüchtigkeit lhres Mercury Motors zu erhalten, um
seine Maximalleistung und Wirtschaftlichkeit nutzen zu
können. Die beigefügte Eigner-Registrierkarte ist lhr
Schlüssel für den ungetrübten Familienspaß. Bitte
informieren sie sich anhand der Bedienuingsanleitung und
Kundendienst- und Gewährlestungsinformation über die
Einzelheiten der Garantiebestimmungen.
Bienvenido a bordo!
E
El cuidado y mantenimiento adecuado de su motor Mercury
es de gran importancia, si desea conseguir las mejores
prestaciones y por tanto, el máximo rendimiento y menor
consumo de combustible. La Tarjeta de Venta adjunta, es
su seguro de diversión familiar sin problemas. Para más
información sobre la cobertura de la garantía, consulte el
«Manual de Uso y Mantenimiento».
90-10185R30
Para que o seu motor Mercury tenha uma boa eficiência,
um maior rendimento e economia, são necessários
cuidados adequados e uma manutenção regular. O cartão
de registro de propriedade é anexo é a sua chave para o
divertimento familiar liver de problemos. Queira consultar o
de
préserver
des
seu «Manual de Operação e Manutenção» que lhe fornece
todos os detalhes sobre a garantia do seu motor.
Omhyggelig og regelmæssig pleje er en vigtig ting, for at De
kan få det bedste ud af Deres Mercury produkt. Vedlagte
registreringskort er Deres nøgle til problemfri familie
sejlads. Se nærmere oplysninger om reklamationsdækning
i instruktionsbogen.
God behandling og godt vedlikehold er en forutsetning for
at din Mercury-motor gir deg topp ytelse og best mulig
økonomisk drift. Vedlagte registreringskort er ditt dokument
som viser at du har krav på rett behandling etter kjøpsloven.
Regelbundet underhåll och skötsel är av största betydelse
för att din Mercury-Produkt skall fungera effektivt och felfritt.
Bifogat registreringskort är ditt leveransservicebevis och
skall vara ifylit för att gälla.
Mahdollisimman hyvän suorituskyvyn ja polttoainetalouden
saavuttamiseksi
määräaikaishuollot ovat tärkeä osa moottorisi hyvinvointia.
Lue huolellisesti moottorisi käyttö- ja huolto-ohjekirja.
Kirjasta löydät ohjeet moottorin hoitoon ja huoltoon.
Oheisessa taskussa on moottorisi takuukortti joka on avain
huolettomaan veneilyyn.
GR
H katÜllhlh fρontßda kai kanonikÞ suntÞρhsh eßnai Ýna
shmantikü tmÞma sth diatÞρhsh tou Pρoúüntoj thj Mercury,
þste autß na leitouρgeß me th mÝgisth apotelesmatiküthta
gia th mÝgisth apüdosh kai oikonomßa. H esþkleisth
KÜρta Pistopoßhshj Katüxou eßnai to kleidß saj gia
oikogeneiakÞ
Anafeρqeßte to "Egxeiρßdio SuntÞρhshj kai Leitouρgßaj"
gia plÞρhj leptomÝρeiej üson afoρÜ thn kÜluyh thj
eggýhshj.
Bem vindo a bordo!
P
Velkommen ombord!
DK
Velkommen ombord!
N
Välkommen ombord!
S
Astu laivaan!
SF
moottorin
KALWS HLQATE
diaskÝdash
–5
oikea
hoito
jo
xwρßj
pρoblÞmata.
GB

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Do you have a question about the 8.0 and is the answer not in the manual?

Questions and answers

Robert G. Becker
March 21, 2025

My merc 8 has cooling line plugged.Been in storage for 1 yr.Can I access the line from outside? There is a plug type port,but afraid to remove it.

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Summary of Contents for Mercury 8.0

  • Page 1 Proper care and regular maintenance is an important part in keeping your Mercury Product operating at peak efficien- cy for maximum performance and economy. The enclosed Owner’s Registration Card is your key to trouble-free family fun. Refer to your «Operation and Maintenance Manual» for full details of your warranty coverage.
  • Page 2 –4 90-10185R30...
  • Page 3 –3 90-10185R30...
  • Page 4 –2 90-10185R30...
  • Page 5 If the outboard motor’s serial number plate contains the CE mark in the lower left–hand corner, the following statement applies: This outboard motor manufactured by Mercury Marine, Fond du Lac, Wisconsin, USA or Marine Power Europe Inc. Park Industrial, de Petit–Rechain, Belgium complies with the requirements of the following directives and standards, as amended: Recreational Craft Directive: 94/25/EC;...
  • Page 6 90-10185R30...

  • Page 7: Table Of Contents

    Operation TABLE OF CONTENTS Pre-starting check list ......... . . Warranty Information Operating in freezing temperatures .

  • Page 8: Warranty Information

    WARRANTY INFORMATION WARRANTY REGISTRATION Outside The United States And Canada TRANSFER OF WARRANTY 1. It is important that your selling dealer fills out the Warranty Registration Card The limited warranty is transferable to a subsequent purchaser, but only for the completely and mails it to the distributor or Marine Power Service Center remainder of the unused portion of the limited warranty.

  • Page 9: Mercury Marine Two Years Limited Warranty(Europe)

    RPM range (see the Operation and Mercury Marine warrant each new Mercury Outboard, Mariner Outboard, Jet Maintenance Manual), operation of the product in a manner inconsistent with the...

  • Page 10: Mercury Marine One Year Limited Warranty(Confederation Of Independent States, Middle- East, Africa)

    WHAT IS COVERED Maintenance Manual), operation of the product in a manner inconsistentwith the Mercury Marine warrant each new Mercury outboard, Mariner outboard, Jet recommended operation/duty cycle section of the Operation and Maintenance Products, Thruster Electric Trolling Motors, Mercruiser Inboard or Sterndrive...

  • Page 11: Year Limited Warranty Against Corrosion

    Mercury Marine warrants each new Mercury outboard, Mariner outboard, sold with less than a one year limited Productwarranty; replacement parts (parts Mercury Racing, Jet Products, Thruster Electric Motor, Mercury Racing, Tracker purchased by customer);...

  • Page 12: Warranty Coverage And Exclusions

    WARRANTY INFORMATION WARRANTY COVERAGE WARRANTY COVERAGE AND EXCLUSIONS WARRANTY COVERAGE AND EXCLUSIONS The purpose of this section is to help eliminate some of the more common 6. Labor performed by other than an authorized dealer may be covered only misunderstandings regarding warranty coverage. The following information under following circumstances: When performed on emergency basis explains some of the types of services that are not covered by warranty.

  • Page 13: General Information

    gob20 GENERAL INFORMATION oba1 BOATER’S RESPONSIBILITIES The operator (driver) is responsible for the correct and safe operation of the boat and safety of its occupants and general public. It is strongly recommended that each operator (driver) read and understand this entire manual before operating the outboard.

  • Page 14: Protecting People In The Water

    WARNING GENERAL INFORMATION LANYARD STOP SWITCH (CONTINUED) Stop your engine immediately whenever anyone in the water is near your boat. Serious injury to the person in the water is likely if contacted by a Read the following Safety Information before proceeding. rotating propeller, a moving boat, a moving gear case, or any solid device Important Safety Information: The purpose of a lanyard stop switch is to stop rigidly attached to a moving boat or gear case.

  • Page 15: Impact With Underwater Hazards

    gob4 gob4 Courtesy of ABYC obi2 EXHAUST EMISSIONS GENERAL INFORMATION Be Alert To Carbon Monoxide Poisoning obt5 IMPACT WITH UNDERWATER HAZARDS Carbon monoxide is present in the exhaust fumes of all internal combustion engines including the outboards, stern drives and inboard engines that propel Reduce speed and proceed with caution whenever you drive a boat in shallow boats, as well as the generators that power various boat accessories.

  • Page 16: Safe Boating Suggestions

    obm90 GENERAL INFORMATION SPECIFICATIONS obk1 Models SAFE BOATING SUGGESTIONS Horsepower In order to safely enjoy the waterways, familiarize yourself with local and other governmental boating regulations and restrictions, and consider the following Kilowatts 11.2 suggestions. Engine Type 4-Stroke Use flotation devices. Have an approved personal flotation device of suitable Number of Cylinders size for each person aboard (it is the law) and have it readily accessible.

  • Page 17: Fastening Security Line

    goc14 god9 INSTALLATION occ1 FASTENING SECURITY LINE The primary purpose for installing a security line is to prevent loss of the outboard if the outboard becomes detached from the boat transom. An effective security line should be of a working strength of at least five times the weight of the outboard.

  • Page 18: Carrying Your Outboard

    god9 oee8 FILLING FUEL TANK WARNING Avoid serious injury or death from a gasoline fire or explosion. Always stop the engine and DO NOT smoke or allow open flames or sparks in the area while filling fuel tanks. Fill fuel tanks outdoors away from heat, sparks, and open flames. Remove portable fuel tanks from boat to refill them.

  • Page 19: Features & Controls

    goe6 gog142 oge11 REMOTE CONTROL FEATURES Your boat may be equipped with one of the Mercury Precision or Quicksilver remote controls shown. If not, consult your dealer for a description of the functions and operations of the remote control. FEATURES & CONTROLS Control Handle - Forward, Neutral, Reverse.

  • Page 20: Tilting Outboard To Full Up Position

    gog52 gog52 FEATURES & CONTROLS ogf4 ogg2 TILTING OUTBOARD TO FULL UP POSITION SETTING THE OPERATING ANGLE OF YOUR OUTBOARD Stop the engine. Shift the outboard into forward gear position. The vertical operating angle of your outboard is adjusted by changing the position Take hold of the top cowl grip and raise outboard to the full up position.

  • Page 21: Operation

    ofd2 OPERATION ENGINE BREAK-IN PROCEDURE ofa1 CAUTION PRE-STARTING CHECK LIST j Operator knows safe navigation, boating, and operating procedures. Severe damage to the engine can result by not complying with the follow- j An approved personal flotation device of suitable size for each person aboard ing Engine Break-in Procedure.

  • Page 22: Starting The Engine - Remote Control Models

    gog57 gog138 OPERATION off20 STARTING THE ENGINE - TILLER HANDLE MODELS Note: Electric starting outboards must have the battery cables connected to a battery at all times when the engine is running. Even if started manually, as damage to the charging system could result. Manual Starting Models - Pull the starter rope slowly until you feel the starter engage, then pull rapidly to crank the engine.

  • Page 23: Gear Shifting

    gog45 gof23 ofp7 EMERGENCY STARTING (CONTINUED) Tiller Handle Models - Set the throttle grip to start position. Electric Start Remote Control Models - Turn the ignition key to ON position. Place the starter rope knot into the flywheel notch and wind the rope clockwise OPERATION around the flywheel.

  • Page 24: Inspection And Maintenance Schedule

    gof66 MAINTENANCE oti7 OWNER RESPONSIBILITY The owner/operator is required to have engine maintenance performed to maintain emission levels within prescribed certification standards. The owner/operator is not to modify the engine in any manner that would alter the horsepower or allow emissions levels to exceed their predetermined factory specifications.

  • Page 25: Top Cowl Removal And Installation

    gof60 gof70 MAINTENANCE ohf2 TOP COWL REMOVAL AND INSTALLATION Removal omc3 FUSE REPLACEMENT - ELECTRIC START MODELS Unlock the rear latch by pushing lever down. IMPORTANT: Always carry spare 20 AMP fuses. Lift rear of cowl and disengage front hook. The electric starting circuit is protected from overload by a 20 AMP fuse.

  • Page 26: Propeller Replacement - Standard Models

    gof70 goh88 ohl29 MAINTENANCE PROPELLER REPLACEMENT - BIGFOOT MODELS ohl27 PROPELLER REPLACEMENT - STANDARD MODELS WARNING WARNING If the propeller shaft is rotated while the engine is in gear, there is the pos- sibility that the engine will crank over and start. To prevent this type of If the propeller shaft is rotated while the engine is in gear, there is the pos- accidental engine starting and possible serious injury caused from being sibility that the engine will crank over and start.

  • Page 27: Spark Plug Inspection And Replacement

    goh90 goh92 MAINTENANCE ohm16 SPARK PLUG INSPECTION AND REPLACEMENT WARNING ome10 CHANGING ENGINE OIL Avoid serious injury or death from fire or explosion caused by damaged spark plug boots (a). Damaged spark plug boots can emit sparks. Sparks Engine Oil Capacity can ignite fuel vapors under the engine cowl.

  • Page 28: Lubrication Points

    goh93 goh208 ohq2 GEAR CASE LUBRICATION When adding or changing gear case lubricant, visually check for the presence of water in the lubricant. If water is present, it may have settled to the bottom and will drain out prior to the lubricant, or it may be mixed with the lubricant, giving it a milky colored appearance.

  • Page 29: Storage

    goh83 STORAGE oia1 STORAGE PREPARATION The major consideration in preparing your outboard for storage is to protect it from rust, corrosion, and damage caused by freezing of trapped water. The following storage procedures should be followed to prepare your outboard for out-of-season storage or prolonged storage (two months or longer).

  • Page 30: Troubleshooting

    TROUBLESHOOTING OWNER SERVICE ASSISTANCE ojb2 eor6 LOCAL REPAIR SERVICE STARTER MOTOR WILL NOT CRANK THE ENGINE (ELECTRIC START Always return your outboard to your local authorized dealer should the need for MODELS) service arise. Only he has the certified mechanics, knowledge, special tools and Possible Causes equipment and the genuine parts and accessories to properly service your engine •...

  • Page 31: Mercury Marine Service Offices

    OWNER SERVICE ASSISTANCE MERCURY MARINE SERVICE OFFICES For assistance, call, fax, or write. Please include your daytime telephone number with mail and fax correspondence. United States Mercury Marine (920) 929-5040 (920) 929-5893 W6250 W. Pioneer Road, P.O. Box 1939 Fond du Lac, Wi 54936 - 1939, USA Canada Mercury Marine Ltd.

  • Page 32: Maintenance Log

    MAINTENANCE LOG oka1 Record here all maintenance performed on your outboard. Be sure to save all work orders and receipts. Date Maintenance Performed Engine Hours 90-10185R30...
  • Page 33 MAINTENANCE LOG Record here all maintenance performed on your outboard. Be sure to save all work orders and receipts. Date Maintenance Performed Engine Hours 90-10185R30...

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9.915 (4-stroke)15

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