MasterCraft prostar 190 2011, Руководство пользователя

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Basic Maneuvering
Steering response is dependent upon three (3) factors: rudder position, motion and throttle. While high-
speed maneuvering is relatively easy and takes little practice, slow-speed maneuvering is far more difficult
and requires time and practice to master.
With both steering and propulsion at the rear of the boat, the initiation of a turn pushes the stern of the boat
away from the direction of the turn. The stern follows a larger turning circle than the bow. This is especially
important to remember when making maneuvers within close quarters.
While the effects of unequal propeller thrust (torque steering), wind, and current may not always be
present, a practiced driver will use them to his/her advantage.
Unequal thrust is a phenomenon shared by all single-engine, propeller-driven boats. With the rudder in
the straight-ahead position, a counterclockwise rotation propeller tends to cause the boat to drive to port
when going forward, and to starboard when going backward.
At high speed, there is compensation for this effect, and it is virtually non-existent. But, at slow speed—
and especially during backing—the effect can be very pronounced. This is the main reason that most experi-
enced drivers approach with the dock to the starboard of the boat.
Stopping—or checking headway—is a technique that must be mastered. With no brakes, reverse must
be used to stop the boat. The momentum of the boat will vary according to the load. Make it a practice to slow
to no-wake speed before shifting into reverse.
When practicing maneuvering techniques, always do so in open water that is free of traffic. Adequate
practice may make the difference between a pleasurable boating experience or a potentially damaging (at the
very least, embarrassing) one.
High Speed Operation
MasterCraft boats are designed to be a high-performance boat. Professional drivers with advanced operat-
ing skills perform high-speed maneuvers and turns on-a-dime. DO NOT attempt to duplicate or simulate these
feats. Paid, professional drivers log thousands of hours on the water and carefully choreograph every move.
Plans are made in advance in the event the routine must be aborted. Maneuvers of this nature
could cause serious injury or death, as well as damage to your MasterCraft boat that will not
be covered under warranty.
Boat operators should never attempt to duplicate operational skills of professional drivers. When
such maneuvers fail, it can result in serious injury or death.
For the best engine performance and longevity, the wide-open-throttle (WOT) engine operation must
be near the top of, but within, the specified WOT operating range. To adjust the WOT operating range, select
a propeller with the proper diameter and pitch. The propeller supplied on the boat was chosen for best all-
around performance under average operating conditions.
Load, weather, altitude and boat condition all affect WOT engine operation. If the boat is used for several dif-
ferent applications such as wakeboarding, barefooting and cruising, it
may be necessary to have two (2) or more propellers of differing size
and pitch to allow the engine to operate in the WOT range for each
application.
Propping the boat should be done after the boat is loaded
in the manner in which it would normally be loaded for each ap-
plication. For example, in propping the boat for wakeboarding, fill
the ballast tanks and add the people and gear that normally would
be expected in the boat. Take the boat out and after warm-up, run
it at wide-open-throttle and note the maximum RPM. EFI engines
are equipped with RPM limiters to prevent over-revving. Take note
if the RPM limiter is activated.
If the WOT RPM is higher than the maximum RPM in your
engine’s WOT operating range, the boat is under-propped. Install-
ing a higher-pitched propeller will reduce the WOT RPMs. An en-
gine that is over-revving may quickly experience catastrophic dam-
age, which will not be covered under warranty.
If the WOT RPM is lower than the minimum RPM in your
engine’s WOT operating range, the boat is over-propped. Installing
2011 Owners Manual...Operational Hints...Page 11-2