MasterCraft X25 User Manual

2013 MasterCraft Owners Manual • Preparation • Page 4-15
High Speed Operation
 MasterCraftboatsaredesignedtobehigh-performanceboats.Professionaldrivers
withadvancedoperatingskillsperformhigh-speedmaneuversandturnson-a-dime.DO
NOTattempttoduplicateorsimulatethesefeats.Paid,professionaldriverslogthou-
sands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 cov-
ered under warranty.
Boat operators should never attempt to
duplicate operational skills of profession-
al 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 aect WOT engine operation. If the
boat is used for several dierent applications such as wakeboarding, barefooting and
cruising, it may be necessary to have two (2) or more propellers of diering 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application.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. Installing a higher-pitched propeller will reduce the
WOTRPMs.Anenginethatisover-revvingmayquicklyexperiencecatastrophicdamage,
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 a lower-pitched propeller will increase WOT
RPMs.
 Anenginethatisunder-revvingis“lugging.”Thisplacesatremendousloadonthe
pistons, crankshaft and bearings and can cause detonation, piston seizure and other
engine damage, which will not be covered under warranty.
Engines should always be operated within
engine manufacturer guidelines. Failure to
do so may cause significant damage to the
engine and drive train and is not covered
under warranty!

MasterCraft X25 Specifications

General

Brand	MasterCraft
Model	X25
Category	Boat
Language	English