Gear Shifting - Mercury 40 jet fourstroke User Manual

9. Check for a steady stream of water flowing out of the water
pump indicator hole.
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 three minutes.

Gear Shifting

IMPORTANT: Observe the following:
• Never shift outboard into gear unless engine speed is at
idle.
• Your outboard has three gear shift positions to provide
operation: forward, neutral (out of gear), and reverse.
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