Selecting Accessories For Your Outboard; Electric Fuel Pump; Top Cowl Removal And Installation; Lifting Outboard - Mercury 25 EFI Service Manual

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Outboard Installation

Selecting Accessories for Your Outboard

Genuine Mercury Precision or Quicksilver Accessories have been specifically designed and tested for your outboard. These
accessories are available from Mercury Marine dealers.
IMPORTANT: Check with your dealer before installing accessories. The misuse of approved accessories or the use of
nonapproved accessories can damage the product.
Some accessories not manufactured or sold by Mercury Marine are not designed to be safely used with your outboard or
outboard operating system. Acquire and read the installation, operation and maintenance manuals for all your selected
accessories.

Electric Fuel Pump

If an electric fuel pump is used, the fuel pressure must not exceed 27.58 kPa (4 psi) at the engine. If necessary, install a
pressure regulator to regulate the pressure.

Top Cowl Removal and Installation

Top Cowl Removal
1.
Unlock the cowl latch located at the rear of the engine by lifting the latch up.
2.
Lift up on the rear of the cowl and disengage the front hook.
Top Cowl Installation
1.
Engage the front hook and push the top cowl onto the lower cowl.
2.
Push the cowl latch down to lock the cowl in place.

Lifting Outboard

Use the lifting eye located aft of the flywheel to support the engine when installing the outboard.

Determining the Mounting Height of the Outboard Jet

The following outboard mounting height settings will work good for most applications, however, because of different boat/hull
designs, the setting should be checked by test running the boat.
Installing the outboard too high on the transom will allow the water intake to suck in air and cause cavitation. (Cavitation
will cause the engine to overspeed in spurts and reduce thrust.) This condition should be avoided by proper height setting.
Page 1D-10
© 2016 Mercury Marine
10170
10111
90-8M0105568 eng MARCH 2016

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