90-8M0104800 MARCH 2015
© 2015 Mercury Marine
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SMART TACHOMETER, SMART
SPEEDOMETER INSTALLATION
IMPORTANT: This document guides our dealers, boatbuilders, and company service personnel in the proper installation or
service of our products. If you have not been trained in the recommended servicing or installation procedures for these or
similar Mercury Marine products, have the work performed by an authorized Mercury Marine dealer technician. Improper
installation or servicing of the Mercury product could result in damage to the product or personal injury to those installing or
operating the product.
NOTE:
After completing installation, place these instructions with the product for the owner's future use.
Installation Information
Before cutting any holes, check area behind dashboard for obstructions (braces, cables, wiring, etc.).
When cutting the dashboard for gauge installation, follow these cutting tips:
•
Fiberglass – Apply masking tape to area to be cut to prevent dashboard from cracking.
•
Vinyl covered – Remove vinyl from area to be cut with razor blade to keep vinyl from tearing.
Outside Air Temperature Sensor Installation
IMPORTANT: Do not allow electrical connections to flex. Fasten all electrical harnesses within 25 cm (10 in.) of the
connection. Ensure all unused harness connectors are protected with weather caps.
1. Mount the air temperature sensor where it will be exposed to outside air and will not be in direct sunlight.
2. Select a location and drill a 19 mm (0.750 in.) mounting hole.
3. Install the mounting adapter.
4. Thread the air temperature sensor into the mounting adapter.
a -
Mounting adapter
b -
Gasket
c -
Dashboard
d -
Nylon nut
e -
Air temperature sensor
Gauge Installation
1. Disconnect both battery cables from the battery.
!
WARNING
Performing service or maintenance without first disconnecting the battery can cause product damage, personal injury, or
death due to fire, explosion, electrical shock, or unexpected engine starting. Always disconnect the battery cables from the
battery before maintaining, servicing, installing, or removing engine or drive components.
2. Select a location for the gauge that has unobstructed visibility.
!
CAUTION
Avoid injury or product damage. Obstructions, such as braces and wiring, may be unseen when looking at the front of the
dashboard. Before drilling or cutting any holes in the dashboard, check the area behind the dashboard for obstructions. Do
not drill or cut when obstructions are present.
a b
c
d
e
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