Mercury 520 Bravo Sterndrive - Local Repair Service; Service Away from Home; Parts and Accessories Inquiries; Service Assistance

Draining Water from the Cool Fuel Module
Mercury MerCruiser recommends draining the Gen 3 Cool Fuel Module if it is
equipped with a drain plug.
1. Remove the drain plug from the Gen 3 Cool Fuel Module and allow the
water to completely drain from the module.
2. Inspect the drain plug and the O‑ring for damage. Replace if needed.
3. Place the O‑ring on the drain plug and apply Perfect Seal to the threads.
Install the drain plug in the module drain hole. Tighten the drain plug to
finger‑tight.
a - Gen 3 Cool Fuel Module
b - Drain plug
c - O‑ring
Tube Ref
No.
Description Where Used Part No.
19
Perfect Seal Drain plug threads 92-34227Q02
Battery Storage
Whenever the battery will be stored for an extended period of time, be sure the
cells are full of water and the battery is fully charged and in good operating
condition. It should be clean and free of leaks. Follow the battery
manufacturer's instructions for storage.
Recommissioning the Power Package
1. Ensure that all cooling system hoses are connected properly and hose
clamps are tight.
c
a
b
50410
COLD WEATHER OR EXTENDED STORAGE
eng 101