Mercury 8.1S Horizon, Product Applications Manual

Page: 67 / 163

Fuel Delivery System
Page 5A-8 90-863758060 AUGUST 2006
Description Nm lb. in. lb. ft.
Fuel line connector 19–27 14–20
9. Insert the filter into the mounting clip.
c
a
b
11212
a - Inline filter
b - Connectors
c - Mounting clip
IMPORTANT: Per Coast Guard Regulation (CFD 183.570), "each fuel filter and strainer
must be supported on the engine or the boat structure independent from its fuel line
connections, unless the fuel filter or strainer is inside a fuel tank."
10. Install and torque the screw and washer through the fuel filter mounting clip into the
stringer.
Description Nm lb. in. lb. ft.
Mounting clip screw 12.2 9
11. Install the hose clamps over the hose and insert the barbs into the hose. Torque the
hose clamps.
12. Inspect the fuel line mounting clips to ensure that the recommended length between
clips has not been exceeded. The maximum allowable length is 46 cm (18 in.).
11213
a
b
a - Fuel line mounting clips b - Fuel line
Description Nm lb. in. lb. ft.
Hose clamps 3.4–6.8 30–60
13. Pressurize the fuel system and check for leaks. Relieve pressure and then check for
leaks again.
Special Fitting Installation Procedure
!
WARNING
Avoid gasoline fire or explosion. Improper installation of brass fittings or plugs into fuel
pump or fuel filter base can crack casting and/or cause a fuel leak.
The following special procedure must be used when making fuel line connection to avoid
damage to fuel filter base.
CARBURETED MODELS
• Apply #565 Loctite Pipe Sealant with Teflon on threads of brass fitting. Do not use teflon
tape.