Mercury 225 EFI, Service Manual

Page: 188 / 719

WIRING DIAGRAMS
Page 2D-38 90-884294 OCTOBER 2001
Tachometer Display Screens
4
3
2
1
5
°
F
Tachometer
0
1
2
3 4
5
6
7
ENG
PSI
WATER
PSI
8
7
9
HRS
VOLT
22.3
13.6
3200
FUEL
USED
2.4
22.0
NOTE: NOT ALL SCREENS MAY APPLY TO YOUR ENGINE TYPE.
When the ignition is turned on, the tachometer will display the last screen that was dis-
played before the ignition was turned off.
Press
MODE
to change display screens. You can revert back to the previous screen by press-
ing and holding
MODE
for 2 seconds. This will reverse the display rotation.
NOTE: Readings can be displayed in English (U.S.) or Metric. Refer to Calibration.
1. Engine Break-in – Displays time remaining on the break-in period of a new engine. This
screen will automatically disappear after the break-in period is complete.
2. Temperature – Displays engine coolant temperature from Cold to Hot.
3. Power Trim Angle: Displays trim angle of the outboard or sterndrive up to the maxi-
mum trim angle, and then displays the trailer angle. 0 = down, 10 = maximum trim,
and 25 = full trailer.
4. Power Trim Angle - Water Pressure – Displays trim angle of the engine and cooling
system water pressure.
5. Water Pressure: Displays cooling system water pressure at the engine.
6. Oil Pressure (Not Shown Above) – Displays engine oil pressure in units of Psi or
Bar.
7. Battery Voltage – Displays voltage level (condition) of battery. Also records the run-
ning time of engine.
8. Fuel Flow – Displays engine fuel use in gallons per hour or liters per hours.
9. Digital Tachometer: Displays engine speed in Revolutions Per Minute (RPM).