Mercury 25 4-Stroke User Manual

MAINTENANCE
50
IMPORTANT: The engine must be run during flushing in order to open the thermostat and circulate water through
the water passages.
!
WARNING
To avoid possible injury when flushing, remove the propeller. Refer to Propeller Replacement, following.
1. Place the outboard in either the operating position (vertical) or in a tilted position.
2. Remove propeller. Refer to Propeller Replacement.
3. Thread a water hose into the rear fitting. Partially open the water tap (1/2 maximum). Do not open the water
tap all the way, as this allows a high pressure flow of water.
IMPORTANT: Do not run engine above idle when flushing.
4. Shift outboard into neutral. Start the engine and flush the cooling system for at least 5 minutes. Keep engine
speed at idle.
5. Stop the engine. Turn off the water and remove hose. Reinstall the propeller.
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Top Cowl Removal And Installation
REMOVAL
1. Unlock the rear latch by pushing lever down.
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2. Lift rear of cowl and disengage front hook.
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INSTALLATION
1. Engage the front hook and push cowl back over the cowl seal.
2. Push cowl down and move the rear latch lever up to lock.

Mercury 25 4-Stroke Specifications

General

Engine Type	4-Stroke
Horsepower	25 hp
Cylinders	2
Fuel Induction System	Electronic Fuel Injection (EFI)
Full Throttle RPM Range	5000-6000 RPM
Starting System	Electric
Steering	Remote or Tiller
Shaft Length	15 in / 20 in
Dry Weight	157 lbs
Fuel Tank Capacity	External
Oil Capacity	1.5 L (with filter)