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Mercury 75 OptiMax User Manual

Mercury 75 OptiMax
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OUTBOARD INSTALLATION
102 eng
NOTICE
1. The outboard should be mounted high enough on the transom so the
exhaust relief hole will stay at least 25.4 mm (1 in.) above the waterline
when the engine is running at idle speed. Having the exhaust relief hole
above the waterline will prevent exhaust restrictions. Exhaust restrictions
will result in poor performance at idle.
2. Add 12.7 cm (5 in.) for XL models to the listed outboard mounting
heights.
3. The mounting height of the outboard must not exceed 63.5 cm (25 in.)
for L models, 76 cm (30 in.) for XL models. Mounting the outboard higher
may cause damage to the gearcase components.
Increasing the mounting height will usually:
Reduce steering torque
Increase top speed
Increase boat stability
Cause propeller to break loose during planing
Drilling Outboard Mounting Holes
IMPORTANT: Before drilling any mounting holes, carefully read
Determining Recommended Outboard Mounting Height and
install outboard to the nearest recommended mounting height.
1. Mark four mounting holes on the transom using the transom
drilling fixture.
a - Drill guide holes
b - Transom drilling fixture
c - Transom centerline
2757
a
a
b
c

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Mercury 75 OptiMax Specifications

General IconGeneral
Engine Type2-stroke
Displacement1526 cc
Horsepower75 hp
Alternator60 amp / 756 watt
Cylinders3
StartingElectric
Full Throttle RPM Range5000-5750 rpm
SteeringRemote
Fuel Induction System2-stage direct fuel injection
Shaft Length20"
Weight170 kg

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