Submerged Outboard - Mercury jet 20 Manual

2. Shift the outboard to forward gear and reduce engine speed to idle. Ensure the primer/fast idle knob is
pushed all the way in and turned to the slowest idle speed.
3. Adjust the idle speed screw to obtain the recommended engine idle speed. Refer to General Information ‑
Specification.
HIGH SPEED MIXTURE ADJUSTMENT
The carburetor is equipped with a standard size high speed fixed jet that is replaceable for operation at higher
elevations.

Submerged Outboard

A submerged outboard will require service within a few hours by an authorized dealer once the outboard is
recovered from the water. This immediate attention by a servicing dealer is necessary once the engine is exposed
to the atmosphere to minimize internal corrosion damage to the engine.
MAINTENANCE
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