Operators Manual - 90A Four Marine Diesel Engine - Publication No. 43502 - Revision 2 - March 2018

Oct 23, 2026

Marine diesel engine operator safety manual for the 90A Four series. Covers California Proposition 65 warnings, exhaust and carbon monoxide hazards, and emergency actions such as exiting to fresh air and shutting down the unit. Provides safety instructions to prevent electric shock, burns from hot engine and exhaust components, fires and flash fires, explosions from fuel vapors, accidental starting, and battery explosions. Includes precautions like using proper enclosures, shutting off power, and following fuel-handling and ventilation steps.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages62

Reading Time2 h 36 min

AccessFree to download

INTRODUCTION

PREVENT ELECTRIC SHOCK

PREVENT BURNS—HOT ENGINE

PREVENT BURNS—FIRE

PREVENT BURNS—EXPLOSION

ACCIDENTAL STARTING

BATTERY EXPLOSION

| 0PERATORS MANUAL
90A F0UR
MARINE DIESEL ENGINE
PUBLICATION NO.43502
REVISION2/MARCH 2018
大WESTERBEKE
WESTERBEKE COBPORATION·150JOHNHANCOCKROAD
MYLES STANDISH INDUSTRIAL PARK·TAUNTONMA 02780
Member National Marine Manufacturers Association | | --- | CALIFORNIAPROPOSITION 65 WARNINGDiesel engine exhaust and someof its constituents are known tothe State of California to causecancer,birth defects,and otherreproductive harm. | WARNING
Exhaust gasses contain Carbon Monoxide,an odorless and
colorless gas.Carbon Monoxide is poisonous and can cause
unconsciousness and death.Symptoms of Carbon Monoxide
exposure can include:
●Throbbing in Temples
●Diziness
●Muscular Twitching
●Nausea
·Vomiting
·Headache
●Weakness and Sleepiness ·Inability to Think Coherently
IF YOU OR ANYONE ELSE EXPERIENCE ANY OF THESE SYMPTOMS
GET OUT INTO THE FRESH AIR IMMEDIATELY.If symptoms persist,
seek medical attention.Shut down the unit and do not restart
until it has been inspected and repaired. | | --- | SAFETY INSTRUCTIONS # INTRODUCTION Read this safety manual carefully.Most accidents arecaused by failure to follow fundamental rules andprecautions.Know when dangerous conditions exist andtake the necessary precautions to protect yourself,your personnel,and your machinery. | As the owner or operator,always observe the following safety rules
and advisories provided for your convenience.This safety information
is in alignment with the American Boat and Yacht Council (ABYC)
standards;however,safety risks are not limited to the information
in the following pages.The responsibility for the identification of
potential and actual risks for compliance with all safety advisories,
maintenance activities,and other condifions belong exclusively
to the owner/operator. | | --- | # PREVENT ELECTRIC SHOCK | AWARNING:Do not toich AC electrical connections
while engine is running.Lethal voltage is present at
these connections! | | --- | Do not operate this machinery without electricalenclosures and covers in place. Shut off electrical power before accessing electricalequipment. 忽Use insulated mats whenever working on electricalequipment. 田Make sure your clothing and skin are dry,not damp(particularly shoes)when handling electrical equipment. 留Remove wristwatch and all jewelry when working onelectrical equipment. # PREVENT BURNS—HOT ENGINE | AWARNING:Do not touch hot engine parts or
exhaust system coimponents.A running enigine gets
very hot! | | --- | 田Monitor engine antifreeze coolant level at the plastic coolant recovery tank and periodicaly ait the filler caplocation on the water jacketed exhaust manifold,but onlywhen the engine is COLD. | AWARNING:Steam can cause injury or death! | | --- | 四In case of an engine overheat,allow the engine to cool before touching the engine or checking the coolant. # PREVENT BURNS一FIRE | AWARNING:Fire can cause injury or death! | | --- | 图.Prevent flash fires.Do not snoke.or permit filames or sparks to occur near the carburetor,fuel line,filter,fuelpump,or other potential sources of spilled fuel or fuelvapors.Use a suitable container to catch all fuel whenremoving the fue line,carburetor,fuel filters.or otherfuel system components. 图Do not operate with the air cleaner/silencer or flamearrester screen removed.Backfire can cause severe injuryor death. Do not smoke or pemnit flames or sparks to occur nearthe fuel system.Keep the compartment and theengine/generator clean and free of debris to minimize thechances of fire.Wipe up all spilled fuel and engine oil. Be aware—Diesel fuel will buin. # PREVENT BURNS一EXPLOSION AWARNING:Explosions trom ftel vapors can causeinjury or dleath! ■ Follow re-fueling safety instructions.Keep the vessel'shatches closed when fueling.Open and ventilate cabinafter fueling.Check belo

FAQs

What immediate action should be taken if carbon monoxide exposure symptoms occur?

Get out into the fresh air immediately. If symptoms persist, seek medical attention and shut down the unit without restarting until inspected and repaired.

How can electric shock risk be reduced when servicing the engine?

Do not touch AC electrical connections while the engine is running, shut off electrical power before accessing equipment, use insulated mats, ensure clothing and skin are dry, and remove wristwatch and jewelry.

What precautions are required to prevent explosions from fuel vapors?

Follow re-fueling safety instructions, keep hatches closed when fueling, ventilate after fueling, check for fumes/vapor before running the blower, run the blower before starting, and store fuel away from ignition sources in a well-ventilated area.

Oct 23, 2026

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