Section 5 - Maintenance
Page 70
90-8M0070851
eng
AUGUST 2012
3. Securely tighten the bleed screw.
a -
Primer pump
b -
Bleed screw
c -
Fine element fuel filter
Fuel System
Priming
Prime the engine if it has not been run for an extended period or if the engine will not start.
1. Move the hand pump/primer plunger on the fine element fuel filter bracket up and down several times.
2. Start the engine.
Filling the Fuel System
NOTE: Follow this procedure if the fuel system was run dry or if part of the fuel system was drained for a service function.
1. Move the hand pump/primer plunger on the fine element fuel filter bracket up and down several times to fill the fuel filter.
2. Check the filter for fuel leaks. Ensure that the bleed screw on the fuel filter bracket is closed.
Winterization of Fuel System
1. Fill the fuel tank to prevent condensation from forming.
2. Inspect the fuel system for leaks.
3. Drain the water from the circulation filter.
4. Replace the fine element fuel filter.
Seawater System
Seawater Pump Impeller Inspection
The seawater pump impeller must be inspected (and replaced, if necessary) at the interval specified by the maintenance
schedule. It is recommended this task be performed at a Mercury Diesel authorized repair facility.
1. Close the seacock.
2. Remove the four screws on the front side of the seawater pump and remove the cover. Discard the O‑ring.
50717
Seawater pump cover screws
a
50753
b
c