Manual Mastercraft X46 (page 190 of 285) (English)

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Preparation • 2014 MasterCraft Owners Manual Page 5-15

P R E P A R A T I O N

At high speed, there is compensation for

this effect, so that unequal thrust is virtually

non-existent. But, at slow speed—and es-

pecially during backing—the effect can be

very pronounced. This is the main reason

that most experienced drivers approach with

the dock to the starboard side 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 tech-

niques, always do so in open water that is

free of trafc. Adequate practice may make

the difference between a pleasurable boat-

ing experience or a potentially damaging

(at the very least, embarrassing) one.

High Speed Operation

MasterCraft boats are designed to ac-

commodate professional drivers with ad-

vanced operating skills who can 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 wa-

ter 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 specied 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 perfor-

mance under average operating conditions.

Load, weather, altitude and boat condi-

tion all affect WOT engine operation. If the

boat is used for several different applica-

tions 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 applica-

tion. For example, in propping the boat for

wakeboarding, ll 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 op-

erating range, the boat is under-propped.

Installing a higher-pitched propeller will

reduce the WOT RPMs. An engine that is

over-revving may quickly experience cata-

strophic damage, which will not be covered

under warranty.

If the WOT RPM is lower than the mini-

mum RPM in your engine’s WOT operat-

ing range, the boat is over-propped. Install-

ing a lower-pitched propeller will increase

WOT RPMs.

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Mastercraft X46 Manual

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