Steering Wheel Turns Hard Or Jerky; Seawater Pressure Is Below Specification; Seawater Pressure Is Above Specification - Mercury 540 Bravo Manual

Steering Wheel Turns Hard or Jerky

Possible Cause
Low power steering pump fluid level.
Sepentine belt loose or damaged.
Insufficient lubrication on steering
system components.
Loose or missing steering fasteners
or parts.
Contaminated power steering fluid.

Seawater Pressure Is Below Specification

Possible Cause
Insufficient water supply.

Seawater Pressure Is Above Specification

Possible Cause
High boat speed causing high ram
pressure.
TROUBLESHOOTING
Refill system with fluid and check for
leaks.
Replace and/or adjust.
Lubricate.
Check all parts and fasteners. If any
are loose or missing, see authorized
Mercury Marine dealer immediately.
Drain and replace.
Check if seacock is completely open.
Check supply hoses for obstruction.
Check for external water pick‑up obstruction.
Check for sea strainer obstruction.
Check condition of sea pump.
Install a sea strainer with a bypass
relief valve.
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Remedy
Remedy
Remedy
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