SERVICE MANUAL NUMBER 26
FUEL PUMP
Fuel Delivery System
Recommendations
WARNING
Boating industry standards (BIA, ABYC, etc.) federal standards and Coast Guard
regulations MUST BE adhered to when installing fuel delivery system.
When designing and installing fuel delivery system, the following information MUST BE
observed:
1.
Fuel tank should be mounted below carburetor level, if possible. If tank is mounted
above carburetor level, gravity feed may cause carburetor fuel inlet needle to unseat,
and flooding may result.
2.
3.
Fuel pickup should be at least 1 in. (25 mm) from the bottom of the fuel tank to prevent
picking up water or other impurities.
Fuel lines used MUST BE Coast Guard approved (USCG type A) and MUST NOT BE
SMALLER THAN 3/8 in. (9.5 mm) I.D. On installations where long lines or numerous
fittings are required, larger size lines should be used.
4.
Fuel line should be installed free of stress and firmly secured to prevent vibration and/or
chafing.
5.
6.
Sharp bends in fuel line should be avoided.
A flexible fuel line must be used to connect fuel line to engine to absorb deflection when
engine is running.
Description
The fuel system consists of fuel tank(s), a water separating fuel filter, an electric fuel pump
and a carburetor.
The fuel is stored in the fuel tank. When the fuel pump is energized by turning on ignition
switch, fuel is drawn from the fuel tank, through the water separating filter, by the electric
fuel pump.
The fuel is pushed through the fuel line to the carburetor where it is metered and supplied
to the engine.
Index
90-861329--1
MARCH 1999
Page 5A-5
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 181 CID |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(6 votes, average: 5 out of 5)
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