Mercury 25 4-Stroke - Operation Procedures; Pre-Starting Checks and Procedures

OPERATION
44
NOTE: Cold Engine - air temperature is below 4° C (40° F) - After starting the engine, slowly advance throttle speed
until engine is warmed up.
ob00356
ART
0%100
START
ST
0%100
START
START
a
b
a - Start position b - Half-way position
7. Manual Starting Models - Pull the starter rope slowly until you feel the starter engage, then pull rapidly to
crank the engine. Allow rope to return slowly. Repeat until engine starts.
ob00627
8. Electric Starting Models - Turn ignition key to the "START" position. If engine fails to start in ten seconds,
return key to "ON" position, wait 30 seconds and try again.
ob00354
!
WARNING
RAPID ACCELERATION HAZARD - Before shifting your outboard from neutral into gear, decrease engine
speed to slow. This will prevent a rapid acceleration that can cause people in the boat to be thrown from their
seats or out of the boat, causing injury or death.
9. Check for a steady stream of water flowing out of the water pump indicator hole.
ob00331
IMPORTANT: If no water is coming out of the water pump indicator hole, stop engine and check cooling water
intake for obstruction. No obstruction may indicate a water pump failure or blockage in the cooling system. These
conditions will cause the engine to overheat. Have the outboard checked by your dealer. Operating the engine
while overheated may cause serious engine damage.
WARMING UP ENGINE
Before beginning operation, allow the engine to warm up at idling speed for 3 minutes.