Mercury 225 HP Installation Manual
INSTALLATION MANUAL
225 HP (4-Stroke)
NOTICE TO INSTALLER: After completing assembly, these instructions should be
placed with the product for the owner’s future use.
IMPORT ANT: If the boat is to be water tested, the operator should be familiar with the
operation procedures in the Operation and Maintenance Manual.
Electric Fuel Pump 1. . . . . . . . . . . . . . . . . . . . . . . . .
Boat Horsepower Capacity 1. . . . . . . . . . . . . . . . . .
Start in Gear Protection 2. . . . . . . . . . . . . . . . . . . . .
Warning Horn Requirement 2. . . . . . . . . . . . . . . . . .
Selecting Accessories For The Outboard 2. . . . . .
Dual Engine Center Line Dimension 2. . . . . . . . . .
Lifting Outboard 3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Cable 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Link Rod 4. . . . . . . . . . . . . . . . . . . . . . . . . .
Installing Outboard 5. . . . . . . . . . . . . . . . . . . . . . . . .
Electric Fuel Pump
If an electric fuel pump is used, the fuel pressure must not exceed 4 psig at the engine. If
necessary, install a pressure regulator to regulate the pressure.
Boat Horsepower Capacity
U.S. COAST GUARD CAPACITY
MAXIMUM HORSEPOWER XXX
MAXIMUM PERSON
CAPACITY (POUNDS) XXX
MAXIMUM WEIGHT
CAPACITY XXX
Front Cable Clamp Assembly 7. . . . . . . . . . . . . . . .
Remote Wiring Harness 8. . . . . . . . . . . . . . . . . . . . .
Battery Cable Connections to the Engine 9. . . . . .
Battery Cable Connections to the Battery 9. . . . . .
Fuel Hose Connection 11. . . . . . . . . . . . . . . . . . . . .
Shift Cable Installation 12. . . . . . . . . . . . . . . . . . . . .
Throttle Cable Installation 14. . . . . . . . . . . . . . . . . .
Propeller Installation 15. . . . . . . . . . . . . . . . . . . . . . .
Trim Tab Adjustment 16. . . . . . . . . . . . . . . . . . . . . . .
Do not overpower or overload the boat. Most boats will carry a required capacity plate indicating the maximum acceptable power and load as determined by the manufacturer following certain federal guidelines. If in doubt, contact your dealer or the boat manufacturer.
Using an outboard that exceeds the maximum horsepower limit of a boat can: 1.
cause loss of boat control 2. place too much weight at the transom, altering the designed flotation characteristics of the boat or 3. cause the boat to break apart, particularly around the transom area. Overpowering a boat can result in serious injury,
death, or boat damage.
90-10232040 MARCH 2003 Printed in U.S.A. - 2003, Mercury Marine Page 1 of 16
WARNING
225 (4-STROKE) INSTALLATION MANUAL
Start in Gear Protection
The remote control connected to the outboard must be equipped with a start-in-gear protection device. This prevents the engine from starting in gear.
WARNING
Avoid serious injury or death from a sudden unexpected acceleration when starting
your engine. The design of this outboard requires that the remote control used with
it must have a built in start-in-gear protection device.
Warning Horn Requirement
IMPORT ANT: Warning Horn Requirement – The remote control or key switch assembly must be wired with a warning horn. This warning horn is used with the engine
warning system.
Selecting Accessories For The Outboard
Genuine Quicksilver Parts and Accessories have been specifically designed and tested for
this outboard.
Some accessories not manufactured or sold by Quicksilver are not designed to be safely
used with this outboard or outboard operating system. Acquire and read the Installation, Operation, and Maintenance manuals for all selected accessories.
Dual Engine Center Line Dimension
b
d
c
a-28.5 in. (724 mm)
b-12.5 in. (317 mm)
c-17.8 in. (453 mm)
d-32 Degree
Page 2 of 16
a
Lifting Outboard
Use 3 point lift strap 91-883705T.
Steering Cable
STARBOARD SIDE ROUTED CABLE
1. Lubricate entire cable end.
225 (4-STROKE) INSTALLATION MANUAL
a
a-Quicksilver 2-4-C Marine Lubricant with Teflon
2. Insert steering cable into tilt tube.
3. Torque nut to 35 lb. ft. (47.5 N·m).
Page 3 of 16
225 (4-STROKE) INSTALLATION MANUAL
Steering Cable Seal
Install O-Ring seal and cap.
a-O-Ring Seal
b-Cap
Steering Link Rod
1. Install steering link rod to rear hole (f) on steering arm per illustration.
b
a
b
g
c
e
f
d
a
a-Special Bolt (10-856680) Torque to 20 lb. ft. (27.1 N·m)
b-Nylon Insert Locknut (11-34932) Torque to 20 lb. ft. (27.1 N·m)
c-Flat Washer
d-Nylon Insert Locknut (11-826709113) Tighten Locknut Until it Seats, Then Back
Nut Off 1/4 Turn
e-Flat Washer (2)
f-Install Steering Link Rod into Rear Hole
g-Steering Link Rod
IMPORTANT: The steering link rod that connects the steering cable to the engine
must be fastened using special washer head bolt (“a” – Part Number 10-856680) and
self locking nylon insert locknut (“d” - Part Number 11-826709113) and self locking
nylon insert locknut (“b” – Part Number 11-34932). These locknuts must never be replaced with common nuts (non locking) as they will work loose and vibrate off freeing
the link rod to disengage.
Disengagement of a steering link rod can result in the boat taking a full, sudden,
sharp turn. This potentially violent action can cause occupants to be thrown overboard exposing them to serious injury or death.
Page 4 of 16
WARNING
Installing Outboard
1. Use transom drilling fixture (91-98234A2) or attach (tape) engine mounting template
(located in this manual) to boat transom.
2. Mark and drill four 17/32 in. (13.5mm) mounting holes.
225 (4-STROKE) INSTALLATION MANUAL
3. Install the outboard so that the anti-ventilation plate is in-line with the bottom of the boat.
a
a-Anti-Ventilation Plate
Page 5 of 16
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