Dual-Engine Trim And Trailer; Power Trim And Mercathode Overload Protection - Mercury TDI 4.2L Manual

To raise the sterndrive for trailering, beaching, launching, low‑speed (below 1200 RPM), and shallow water operation push the
trim button to raise the sterndrive to the full up (out) position.
Some controls also have a trailer button that trims the sterndrive to a position suitable for trailer purposes only.
Dual‑Engine Trim and Trailer
If using external tie bars, raising or lowering the drives independently of each other can damage the drive and steering
systems. If using an external tie bar, raise and lower all drives together as a unit.
Dual‑engine applications may have a single integral button to operate both sterndrives simultaneously or may have separate
buttons for each sterndrive.
Some controls also have a trailer button that trims the sterndrives to a position suitable for trailer purposes only.

Power Trim and MerCathode Overload Protection

If an electrical overload on the electrical system occurs, a fuse will open (blow). Find and correct the cause before replacing the
fuse.
NOTE: If you must operate the engine in an emergency, turn off and disconnect all accessories from the engine and
instrumentation wiring if you cannot find and correct the cause for the electrical overload or excessive current draw. Replace
the fuse. If the fuse burns out, the electrical overload has not been eliminated. Further checks must be made on the electrical
system. Contact your Mercury Diesel authorized repair facility.
1. The power trim system is protected from overload by a 110‑amp fuse and a 20‑amp in‑line fuse on the power trim pump.
a
2. There are several different Quicksilver MerCathode systems available. Each has a fuse connected to the positive (+)
terminal on the controller. If the fuse is open (blown), the system will not operate, resulting in a loss of corrosion protection.
Replace the fuse with one of the same amp rating.
a
c
b
90-8M0114081 DECEMBER 2015
eng
b
a - MerCathode
b - Red/purple wire
c - Fuse
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Section 1 - Getting to Know Your Power Package
NOTICE
a - 20‑amp in‑line fuse holder
b - 110‑amp fuse
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