Mercury 25 4-Stroke - Starting the Engine - Tiller Handle Models

OPERATION
42
NOTE: Cold Engine - air temperature is below 4° C (40° F) - After starting the engine, slowly advance the neutral
fast idle speed feature to increase idle speed until engine is warmed up.
• Starting Flooded Engine - Advance the neutral fast idle speed feature to the maximum fast idle speed
position and continue to crank the engine for starting. Immediately reduce engine speed after engine
starts.
a
b
a
b
ob00353
a - Fully closed position b - Maxumum fast idle speed position
7. 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
8. After engine starts, 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 will cause engine damage.
WARMING UP ENGINE
Before beginning operation, allow the engine to warm up at idling speed for 3 minutes.
Starting The Engine - Tiller Handle Models
Before starting, read the Pre-Starting Check List, Special Operating Instructions, and Engine Break-in Procedure
in the Operation Section.