MasterCraft prostar 197, X-7 - New Boat Break-In; First Hours of Operation; After Break-In Procedures

 Therstfty(50)hoursofoperationarethemostimportantfor
theboat.Properbreak-inwillensuremaximumperformanceandthe
longestpossiblepower-trainlife.Thebreak-inperiodallowsmoving
partswithintheengineandtransmissiontowear-inproperly.AllMas-
terCraftboatsarelake-testedonthewaterbeforeleavingthefactory,
butthebreak-inmustcontinuefortherstfty(50)hoursofyour
ownership.
To ensure proper break-in and lubrication, boat owners
should not remove the factory break-in oil until after the
initial ten (10) hours of operation. At that time, an oil
change should be performed on the Indmar engines by
an authorized MasterCraft service technician at an au-
thorized MasterCraft dealer.
Failure to follow the break-in procedure exactly as stated
will void the engine warranty!
NOTE: Before operating the boat for the rst time you must
read the engine manufacturer’s manual completely in addition
to this Manual!
 Pleasefollowthebreak-inprocedurecarefully.Closeattentionto
thefollowingisveryimportant:
• Maintain the proper oil level. Untilthe piston rings, cylinder
andotherworkinginternalpartsarethoroughlyseated,oilcon-
sumptioncanbehighandmustbecarefullywatched.(Thiscontin-
uestobeimportantafterbreak-in,aswell).
• Pay close attention to the gauges.Itisimportanttostopthe
engineimmediatelyifthegaugesindicateaproblem.Lowoilpres-
sureandoverheatingareseriousissuesandrequireimmediateat-
tention.
• Abnormal vibration or noises.Thesesymptomscanprecede
trouble and should not be ignored. Occasionally, hardware may
workloose,mountingsmayneedtobetightenedorthedriveline
mayrequireattention.
new b oat b rea k-i n
• Fuel, oil or water leaks. Leakscanposeaserioussafetythreat.
Ifoneoccurs,itismostlikelytodosoafterafewhoursofopera
-
tion.
• Vary the engine speed. Never run the engine for morethan
three(3)minutesatanyconstantRPMduringthebreak-inperiod.
Doingthiswillassistintheproperbreak-inofringsandbearings.
• Plane the boat quickly. Operatingtheboatatlowspeedsplaces
anexcessiveloadontheengine.Planequickly,thenbackdowntoa
slowerspeed.
First Hours of Operation
 Eachenginemanufacturerhasdetailedandspecicrequirements
forproperengine break-in.That information is foundinthe engine
manualsupplied,andmustbefollowedexactlyasindicated.Failureto
dosocouldcauseenginedamageand/orfailurethatisnotcovered
underwarranty.
After Break-In
 Oncethebreak-inperiodisover,theboatmaybeoperatedcon-
tinuouslyatanyspeed,butnotbeyondthemaximumindicatedinthe
enginemanual.
 The engines are equipped with rev-limiters which will cause a
utteringsoundwhenreached.Iftheboathasthecorrectpropeller
set-up,operatorsshouldneverreachthelimiter,butifthathappens,
itisasignalthatyoushouldreducethethrottleandcheckwithan
authorizedMasterCraftdealertodeterminethecause.
 Alwaysrememberthatduringnormaloperationyoushouldallow
theenginetowarmupgradually.Besuretheengineiswarmbefore
accelerating.Pay careful attention to thegauges.Also, check theoil
levelfrequentlyduringtherstfty(50)hoursofoperationsincethe
pistonringsandcylindersrequirethatmuchtimetoseatproperly.
 See the Scheduled Maintenance Checks and Services section for
moredetails.
Failure to follow the engine oil recommendations listed
in the engine manual can cause additional engine wear
and increase the possibility of engine component fail-
ure. Damage to the engine due to incorrect oil usage can
be costly to repair, and is not covered by the warranty!
mastercraft 2010 ow n e r ’s m anual • page 9-1