Mercury 300R HD CMS Mechanical, Operation And Maintenance Manual, Page: 80 / 99

Tube Ref
No.
Description Where Used Part No.
114
Power Trim and
Steering Fluid
Trim pump reservoir 92-858074K01
4. Trim the outboard full up and down to purge air out of the system. The
fluid level may drop. Add Power Trim and Steering Fluid if necessary, but
do not overfill past the maximum level.
5. Replace the fill cap.
Checking Hydraulic Steering Fluid
!
WARNING
Dirt or contaminants in the hydraulic steering system can damage the
steering system's internal components. Damaged components can lead to
serious injury or death due to loss of boat control. Do not allow dirt or
contamination to enter the helm, lines, or cylinder of this steering system and
perform all hydraulic inspections, service, or assembly procedures in a clean
work area.
IMPORTANT: Check the hydraulic steering fluid level on a regular basis. The
steering system must be full of fluid to ensure the steering helm will not
introduce air into the steering system. A hydraulic steering system which has
entrained air will have spongy or unresponsive steering control which could
compromise the operator's ability to control the boat. On dual helm steering
systems, always check the upper steering helm first. If the system must be
purged of entrained air, one person may not be able to completely fill and purge
the air from the steering system. See your dealer if you have questions on your
steering system or refer to the installation instructions included with your
steering system.
Checking Power Steering Fluid
!
WARNING
Dirt or contaminants in the hydraulic steering system can damage the
steering system's internal components. Damaged components can lead to
serious injury or death due to loss of boat control. Do not allow dirt or
contamination to enter the helm, lines, or cylinder of this steering system and
perform all hydraulic inspections, service, or assembly procedures in a clean
work area.
MAINTENANCE
70
eng