EasyManuals Logo

Mercury 300XS OptiMax User Manual

Mercury 300XS OptiMax
108 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #63 background imageLoading...
Page #63 background image
OPERATION
55
Pre-Starting Check List
Engine lowered to run position with all water intake holes
submerged
Fuel tank vent cap open or fuel drain valve on.
Fuel supply OK
Lanyard stop switch in "RUN" position and cord connected.
Remote control in neutral
Top cowl latches secure.
Make inspection checks listed in the Inspection and
Maintenance Schedule. Refer to Maintenance section.
Operating at Off-Idle Speeds
Unlike other OptiMax engines, this outboard is designed to
discharge water though the idle exhaust boot (located at the aft
end of the bottom cowl) when operating at speeds above idle. The
volume of discharged water increases with boat speed as a result
of the engine cooling system.
Operating In Freezing Temperatures
When using your outboard or having your outboard moored in
freezing or near freezing temperatures, keep the outboard tilted
down at all times so the gearcase is submerged. This prevents
trapped water in gearcase from freezing and causing possible
damage to the water pump and other components.
If there is a chance of ice forming on the water, the outboard should
be removed and drained completely of water. If ice should form at
the water level inside the outboard driveshaft housing, it will block
water flow to the engine causing possible damage.
Operating In Salt Water Or Polluted Water
We recommend that you flush the internal water passages of your
outboard with fresh water after each use in salt or polluted water.
This will prevent a buildup of deposits from clogging the water
passages. Refer to Maintenance - Flushing The Cooling
System.

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Mercury 300XS OptiMax and is the answer not in the manual?

Mercury 300XS OptiMax Specifications

General IconGeneral
Engine Type2-Stroke
Horsepower300 HP
Alternator Output60 amp / 756 watt
Gear Ratio1.75:1
Starting SystemElectric
Fuel System2-Stage Direct Fuel Injection (DFI)
Weight505 lbs / 229 kg
Cylinders6
SteeringHydraulic
Shaft Length25"

Related product manuals