How pumps work


Identifying Mercruiser Parts

Introduction:These are in cylindrical shape from varying
diameter of 1.5" to 12" inlet and outlet.
Mercruiser is an advanced marine propulsionThese are suitable for below waterline
system and is available in recreational andinstallation  and  can  easily  be  replaced.
commercial vehicles ranging from 1.5-liter
displacement to 14.0-liter displacements.Fresh  water  System:
These are generally two stroke diesel engine
vehicles and are termed as inboards or sternThese are the complete pump and pipe system
drives  depending  on  the  vehicle  design.for circulating fresh water used for cooling
2 stroke outboard engines. These systems are
Mercruiser  parts:available with complete instructions and can
easily  be  replaced.
This water vehicle contains the following
major  parts.Oil  Coolers:
Mercruiser  Engine:These are the cylindrical coolers used for
cooling oil and these are available in
These are the heart of any vehicle and arevarying sizes from 5" * 1" to 12" * 1.25" and
available in 4, 6 or 8 cylinders capacities,sometimes two cylinders attached together are
especially for stern drives. The engineprovided  as  dual  coolers.
rating and displacement or fuel system are
also important for a specific purposeMotor  and  Gear  Lube:
motorboat. These are the important Mercruiser
parts and every engine contains a tagService manual provides the complete
specifying  details  of  the  engine.instruction to change engine and gear oil at
particular interval and the oil should be
Carburetor:changed as per the direction given in manual.
Carburetor is attached to the fuel deliverySome other important mercruiser parts include
system and filters and regulates the supplyelectrical system; power steering, couplers
of fuel to the engine. The carburetor can beand  stern  drive  parts.
identified by its design (filtering and
regulating fuel) or matching its design fromIdentifying  the  mercruiser  parts:
the catalogue or manual provided with the
boat.A tag is attached to identify engine model,
serial number of engine, transcom assembly
Exhaust  Manual:serial number and drive serial number.
Similarly for inboard transmission, model and
These Mercruiser parts are used for removingserial numbers are provided on a tag on the
combustion gases from engine through exhausttop or side of transmission. You should
manifold. These are attached to the exhaustverify the tag details to the manual provided
system.to you by the manufacturer and both the
details  should  match.
Water  and  Fuel  Pumps:
Once you have located the correct model
Raw water pumps or circulating water pumpsnumber with specified transmission details,
are used for cooling outboard engines byyou should see the parts details as figure of
continuously circulating water. These pumpseach part has been provided. You should
are supplied with full instructions and canidentify the figure from catalogue or manual
be replaced easily. Fuel pumps are smallprovided to you or you should visit the web
nozzles through which fuel, which issite of the manufacturer. Once the parts
generally  diesel, is injected to the engine.corresponding to the figure has been
identified, you should note down the serial
Marine  Mufflers:number supplied in the catalogue or web site.
Once you are able to locate the exact part
These are the silencers made from fiberglassnumber and corresponding serial number, it is
and are designed for backpressureeasy for you to purchase these parts directly
compensation and resistant from corrosion.from manufacturer or resellers.



1 A B C D E F 89 90 91 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 131 132 133 134 135 136 137 138