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Mercury 540 Bravo - Troubleshooting: Engine Performance Issues; Engine Hard to Start, Rough Running, Misses, Backfires

Mercury 540 Bravo
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13. Before launching the boat, pull up on the manual release valve. Verify that
the green indicators are no longer extended.
a - Manual pressure release valve
b - Threaded cap for air connection
c - Green indicators
Manual Drain System
BOAT IN THE WATER
NOTE: Use this procedure if the air‑actuated single‑point drain system fails.
NOTE: It may be necessary to lift, bend, or lower hoses to allow water to
completely drain when hoses are disconnected.
1. Close the seacock (if equipped) or remove and plug the water inlet hose.
a
b
c
50399
COLD WEATHER OR EXTENDED STORAGE
96 eng

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