MasterCraft 2007 ProStar User manual

Welcome Aboard!
Congratulations on your choice
of the finest ski and wakeboard
boat available. MasterCraft is
the recognized world leader for
inboard ski boats today and has
been for more than 35 consecu-
tive years. The quality, innova-
tion, selection and value are un-
matched in the industry.
Please take a few minutes to read
this owners manual completely in
addition to carefully reviewing ad-
ditional information also provided
with your new boat. These publica-
tions will help answer most of the
remaining questions you may have
about your new boat.
Every effort has been made to
make this manual accurate. All
information is based on the latest
product information available at
the time of printing.
Because of our policy of continu-
ous product improvement, we re-
serve the right to make changes at
any time, without notice, in speci-
fi cations and models and also to
discontinue models. The right is
also reserved to change specifi ca-
tions, parts or accessories at any
time without incurring any obliga-
tion to equip the same on models
manufactured before the date of
the change.
The continuing accuracy of this
manual cannot be guaranteed. The
illustrations used in this manual are
intended only as representative ref-
erence views and may not depict
actual model components parts.
Information about certain on-board
components furnished by suppliers
other than MasterCraft is provided
separately. This information is avail-
able from your dealer.

Dangers, Warnings & Cautions
This is the safety alert symbol. It is used to alert you to potential personal in-
jury hazards. Obey all safety messages that follow this symbol to avoid possible
injury or death.
DANGER indicates an imminently hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
CAUTION used without the safety alert symbol indicates a potentially haz-
ardous situation which, if not avoided, may result in property damage.
2007 MasterCraft Owners Manual - Page i
Throughout this manual the terms “danger,” warning” and “caution” appear, alerting the boat owner or opera-
tor to dangerous or potentially dangerous situations that may arise. Those terms have the following respective meanings
whenever they appear herein:
Failure to adhere to and comply with the safety dangers, warnings and cautions that appear in this manual
can lead to serious illness, injury or even death and/or damage to your boat or the property of others. Beyond these
warnings, boaters have a personal responsibility to utilize a common sense approach to the boating experience, in-
cluding keeping individuals off or near the swim platform and the stern area of the boat during the engine operation.
Personal fl otation devices (“PFDs”) save lives and ensure positive experiences. MasterCraft offers many proac-
tive approaches to the boating experience, but the consumer is ultimately responsible for a posi-
tive and safe involvement in boating.
Be sure to review the Boating Safety section of this manual, which immediately follows this section. Because of
the importance of these dangers, warnings and cautions, they are reprinted here, along with the pages on which you’ll
fi nd them. Please note that the safety information statements presented below are categorized for information purposes
only, and are not presented in any particular order of importance. Each of the statements referenced below and in the
other sections of this manual provide you with important safety-related information and must be read and followed to
avoid injury or damage, as applicable. We strongly encourage you to cross-reference and read the dangers, warnings
and cautions within the context in which they are presented by reading and reviewing those sections.
DANGER indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
1: Failure to comply with safety-related information and instruction may result in serious injury or death to you and/or
others. Always use common sense when operating the boat or participating in any activities associated with the
boat. (Page 1-3)
2: Gasoline is highly fl ammable and its vapors may ignite resulting in fi re or explosion. Be sure to keep all sparks and
fl ames well away from the area while inspecting the boat’s fuel system. (Page15-5)

2007 MasterCraft Owners Manual - Page ii
3: Gasoline is explosive. If you see or smell the presence of
gasoline during your inspection, DO NOT START YOUR
ENGINE! Remove your ignition key from the ignition switch
and call your MasterCraft dealer for service. (Page 15-15)
4: Gasoline is extremely fl ammable and highly explosive un-
der certain conditions. Always stop the engine and never
smoke or allow open fl ames or sparks within 50 feet of
the fueling area when refueling. (Page 6-2)
5: Take care not to spill gasoline. If gasoline is spilled ac-
cidentally, wipe up all traces of it, with dry rags immedi-
ately and dispose of properly on shore. (Page 6-2)
6: Failure to operate the blower as instructed could cause
improper ventilation of the boat engine and bilge areas.
Fuel vapors can accumulate in this area and cause a fi re
or explosion which may result in serious injury or death!
(Page 5-4)
7: To prevent a possible explosion, operate the blower for at least four (4) minutes before starting the engine and
always when at idle or slow-running speed. Explosive gasoline and/or battery fumes may be present in the engine
compartment. Failure to do so may result in serious injury or death! (Page 9-1)
8: Carbon monoxide is a colorless, tasteless, odorless and poisonous gas that accumulates rapidly and can cause
serious injury or death. Exposure to carbon monoxide can be fatal in a matter of minutes. Exposure to even low
concentrations of carbon monoxide must not be ignored because the effects of exposure to carbon monoxide are
cumulative and can be just as lethal as at high concentrations. Carbon monoxide from exhaust pipes of inboard or
outboard engines may build up inside and outside the boat in areas near exhaust vents. STAY AWAY from these
exhaust vent areas, which are located at the stern of the boat, and DO NOT swim or engage in any watersports
or other activities in or near the stern area of the boat, including, without limitation, the swim platform and the rear
sun deck, when the engine is in operation. Under no circumstances should “teak surfi ng” or similar activities be
performed during the operation of your MasterCraft boat—such activities are a misuse of this product. (Page 2-1)
9: The safety switch lanyard must be attached to the operator whenever the engine is started. Failure to do so may
result in serious injury or death. (Page 5-4)
10: Never override or modify the engine safety shut-off switch or engine neutral starting safety switch in any way. (Page 1-3)
11: Before starting the engine, open the engine compartment and check for gasoline fumes, fuel and oil leaks or the
presence of fuel or oil in the bilge. (Page 9-1)
12: Do not tow more than two persons at one time on a tow tower. The tow tower should be used only for water skis,
wakeboards, or recreational towables and not for parasailing, kite fl ying or towing other boats. Do not add any
attachments that are not installed by MasterCraft. Do not climb on, sit on, stand on, jump off or dive off the tower.
Never allow passengers to sit behind the tow rope attachment point. Never allow loose tow rope ends to dangle.
Always be certain that all bolts are in place and tight before and during use. When the tower is up, watch for low
obstacles such as tree limbs, bridges or power lines. (Page 1-4)
WARNING indicates a potentially hazardous situation which,
if not avoided, could result in death or serious injury.
1: DO NOT launch or operate the boat if any problem is found during the Safety Check. A problem could lead to
an accident during the outing, resulting in serious injury or death. Any and all problems should receive attention
immediately. See your MasterCraft dealer for assistance. (Page 7-1)

2007 MasterCraft Owners Manual - Page iii
2: Running the engine with a fl ame arrestor removed increases the possibility of fi re or explosion if the engine should
backfi re and gasoline fumes are present. If the engine is operated without the fl ame arrestor secured, extreme care
must be taken to ensure that the engine compartment is well-ventilated and that no fuel leaks are present. (Page
17-2)
3: Battery electrolyte fl uid is dangerous. It contains sulfuric acid, which is poisonous, corrosive and caustic. If electro-
lyte is spilled or placed on any part of the human body, immediately fl ush the area with large amounts of clean
water and seek medical aid. (Page 15-3)
4: When charging, batteries generate small amounts of dangerous hydrogen gas. This gas is highly explosive. Keep
all sparks, fl ames and smoking well away from the area. Failure to follow instructions when charging a battery can
cause an electrical charge or even an explosion of the battery which could cause serious injury or death. (Pages
15-3 and 15-7)
5: The engine box serves as a machinery guard. The engine must be OFF whenever the box is open. Clothing or body
parts can get caught in moving parts, causing serious injury or death. Keep away from moving parts! (Pages 15-5
and 15-6)
6: Adding additional ballast to your MasterCraft boat is not recommended, and can result in impaired visibility, di-
minished handling characteristics and instability when operating your boat, and may result in potential structural
and/or engine damage to your boat, which damage will not be covered by your warranty. (Page 10-1)
7: Use of improper parts can cause component or engine failure, which may result in serious injury or death! (Page12-1)
8: Towers on boats are intended for use in wakeboarding only. Use of the tower to tow other boats, kites or any other
purpose may result in serious injury or death, and may damage the boat, which will not be covered by warranty.
(Page 1-4)
CAUTION indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate injury.
1: Be sure that all fasteners you use are approved and rated for marine use. Most fasteners used on MasterCraft boats
are stainless steel or specially coated to resist corrosion. (Page 12-1)
2: All replaced fuel system components must meet United States Coast Guard (“USCG”) and American Boat & Yacht
Council, Inc. (“ABYC”) standards, and must be Underwriter’s Laboratory (“UL”)-approved. Inferior quality compo-
nents pose a serious safety threat to you and others, and the use of inferior components may result in serious injury
or death. Resulting damage may void your warranty. (Page 15-15)
2007 MasterCraft Owners Manual - Page iii
3: Continuing to operate the boat while the
temperature is above normal operating
parameters may cause serious damage
to your engine. Damage to your engine
resulting from operating the engine in an
overheated condition can be costly to re-
pair. Such damage is not covered by your
warranty! (Page 5-2)
4: Do not continue to run the engine if the
oil pressure is low. If you do, the engine
can become so hot that it—or surrounding
components—could catch fi re. You or oth-
ers could be burned and the boat seriously
damaged. Check your oil level and add an
appropriate amount of approved motor oil

2007 MasterCraft Owners Manual - Page iv
before operating again or have your boat serviced by your local MasterCraft dealer. Note that damage to your engine
from neglected oil problems can be costly to repair. Such damage is not covered by your warranty. (Page 5-3)
CAUTION used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided, may
result in property damage.
1: 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 by an authorized MasterCraft
service technician/your local MasterCraft dealer. (Page 8-1)
2: DO NOT use the ski pylon for lifting. It is NOT designed as a central lifting point. Also, DO NOT use the stern ski
tow as a lifting ring. The deck will be damaged. See the Storage Cradle sub-section of the Lifting the Boat section
of this Manual. Also never lift a boat with a large amount of water in the bilge or containing a water-fi lled device
such as a Fat Sac or ballast system. The extra stress will put an excessive load on the hull and lifting equipment that
may seriously damage the boat and void your warranty. (Page 11-1)
3: Continued operation after the warning light has illuminated may
cause severe damage. This will void your warranty. (Page 9-3)
4: Because of the complexity of preparing your boat for proper
winter storage, as well as the possibility of extreme damage to
the engine if a preparation error was made during winterization,
MasterCraft recommends that you schedule an appointment with
your local MasterCraft dealer and permit the dealer to perform
the winterization procedures. (Page 17-1)
5: Add-on equipment may adversely affect the alternator output or
overload the electrical system. Any damage caused as a result will
not be covered by, and may void, your warranty. (Page 15-3)
6: Ignoring elevated temperatures on a temperature gauge or any
other evidence of the engine operating at temperatures above
recommended levels can result in serious damage to the engine.
Any resulting damage will not be covered by, and may void, your
warranty! (Page 15-4)
7: Failure to follow the engine oil recommendation listed in the man-
ual can cause additional engine wear and increase the possibil-
ity of engine component failure. Damage to your engine due to
incorrect oil usage can be costly to repair, and is not covered by
your warranty! (Page 8-2 and 15-10)
8: Failure to maintain your coolant at the proper level can cause engine damage. Your warranty will not cover engine
damage due to overheating or any other cause associated with improper coolant levels. (Page 15-2)
9: Do not operate the starter motor continuously for more than fi fteen (15) seconds without at least a two (2) minute
“cool-down” period. Failure to do so may cause the starter to overheat, resulting in damage. Failure to release the
ignition key after the engine has started may cause damage to the starter motor and drive. (Page 9-2)
10: Damage to the engine by use of low-quality gasoline or gasoline with an octane rating below the minimum level
listed will void the warranty on your boat. (Page 6-2)

11: Fuels that are blended to contain methanol or wood alcohol are not to be used in MasterCraft engines. These fuels
can corrode some metal parts in your fuel system and engine. Damage caused by the use of unapproved fuels is
not covered by warranty. (Page 6-2)
12: Extended storage with fuel in the system can affect the fuel’s stability and may require system inspection and fuel
fi lter replacement, when the unit is placed back into service. (Page 6-2)
13: Lifting slings must never contact shafts, struts or hardware protruding from the hull. Damage caused by slings will
void your warranty. (Page 11-1)
14: When your boat is out of the water, it is important to support the hull correctly to avoid any hull damage that will
void your warranty. (Page 11-1)
15: Crossing cables or jumper cables can result in damage to the electrical components due to incorrect battery con-
nections. Such damages are not covered by your warranty. (Page 15-7)
16: Attention must be paid to any leakage occurring in the propeller shaft log area. Water intrusion into the transmis-
sion, which can happen if excessive leakage is occurring, can cause serious damage and void your warranty.
(Page 15-5)
17: Allowing the fuel level in the fuel tank to fall below one-quarter of a tank full may affect the reliability of the fuel
pump or result in damage to the fuel pump, which is not covered under warranty. (Page 6-2)
2007 MasterCraft Owners Manual - Page v

Table of Contents
2007 MasterCraft Owners Manual - Page vi
Boating Safety ...................................................................1-1
Common Sense Approach................................................... 2-1
Rules of the Open Water.....................................................3-1
Guide to Individual Models .................................................4-1
Engine & Propeller Specifi cations ......................................4-3
Controls and Indicators .......................................................5-1
Using Care While Fueling ...................................................6-1
Safety Checks and Services ................................................. 7-1
New Boat Break-In .............................................................8-1
Starting and Basic Operations .............................................9-1
Operational Hints.............................................................10-1
Lifting the Boat................................................................. 11-1
Corrosion ........................................................................ 12-1
Cleaning.........................................................................13-1
Scheduled Maintenance Checks & Services .........................14-1
Before Each Use...............................................................15-1
Transmission Cooler....................................................... 15-1
Coolant Level................................................................15-1
Alternator Belt............................................................... 15-2
Battery Connections and Hold-Downs .............................. 15-2
Loose or Missing Hardware ............................................15-3
Cable Kinks, Wear and Interference ................................15-4
Impeller........................................................................15-4
Propeller Shaft Log ........................................................15-5
Fuel System Leaks .......................................................... 15-5
Exhaust System Leaks.....................................................15-6
Fully Charged Battery ....................................................15-6
Engine Oil Level ............................................................ 15-7
Transmission Fluid Level..................................................15-8
Quarterly Maintenance .....................................................15-8
Engine Starter Gear and Shaft Lubrication ........................15-8
Change Engine Oil .......................................................15-9
Annual Maintenance ......................................................15-10
Clean Engine Flame Arrestor.........................................15-10
Replace Raw Water Pump Impeller ................................15-12
Engine Tune-Up........................................................... 15-12
Change Transmission Fluid ...........................................15-12
Check Engine Mounts ..................................................15-13
Check Propeller Shaft Coupling Alignment...................... 15-13
Inspect Exhaust Flaps ...................................................15-13
Lubricate Steering System .............................................15-13
Lubricate Shift and Throttle System .................................15-14
Ballast Pump Impeller...................................................15-14
Inspect Complete Fuel System for Leakage ......................15-14
Emissions ........................................................................16-1
Storage/Winterization ...................................................... 17-1
General Preparation ...................................................... 17-1
Fuel System Treatment .................................................... 17-1
All Engines................................................................... 17-2
Raw-Water Cooled Engines ............................................ 17-2
Fresh-Water Cooled Engines ........................................... 17-3
Drive Train Preparation................................................... 17-3
General Power Package Preparation ................................ 17-3
Other Winterization Preparation...................................... 17-3
Ballast System Preparations............................................. 17-4
Reactivating After Storage .............................................. 17-4
Unscheduled Maintenance ................................................18-1
Checking/Repairing Propellers........................................ 18-1
Changing Propellers ......................................................18-1
Checking Speedometer Calibration .................................18-1
Troubleshooting................................................................19-1
Limited Warranty Statement ...............................................20-1
Warranty Transfer ............................................................21-1
Team MasterCraft............................................................. 22-1
Genuine MasterCraft Parts................................................. 23-1
Service Log...................................................................... 24-1
2007 MasterCraft Owners Manual - Page vi

Boating Safety
Your safety, as well as the safety of others with and around you, is a direct result of how you operate and maintain
your boat. Read and comprehend this manual. Make sure that you understand all the controls and operating instruc-
tions before attempting to operate the boat. Improper operation is extremely dangerous!
The basic safety rules are outlined in this section of the manual. Additional precautions throughout the manual are
noted by the following symbols:
This is the safety alert symbol. It is used to alert you to potential personal in-
jury hazards. Obey all safety messages that follow this symbol to avoid possible
injury or death.
DANGER indicates an imminently hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
CAUTION used without the safety alert symbol indicates a potentially haz-
ardous situation which, if not avoided, may result in property damage.
The precautions listed in this manual and on the boat are not all-inclusive. If a procedure, method, tool or part is not
specifi cally recommended by MasterCraft, using it may place you and others in an unsafe situation; as well, you may
render your warranty void. Remember: Always use common sense when operating, servicing or repairing the boat!
In addition to everyday safety, failure to observe the safety recommendations may result in severe personal injury
or death to you or to others. Use caution and common sense when operating your boat. Don’t take unnecessary
chances!
General Precautions
Be certain that all boat operators are aware of this information and conform to boat safety principles.
Boating safety starts with a thorough understanding of operation. In addition to careful review of this manual, you
should be aware as well that there are many sources of information available. MasterCraft urges you to pursue ad-
ditional training.
The following is a listing of just some of the agencies and organizations that offer safety training or information.
American Red Cross, National HQ
8111 Gatehouse Road, 6th Floor
Falls Church VA 22042
[phone]
www.redcross.org
USA Water Ski Association
1251 Holy Cow Road
Polk City FL 33868
[phone]
http://www.usawaterski.org
2007 MasterCraft Owners Manual - Page 1-1

Boat Owners Association of the United States
880 South Pickett Street
Alexandria VA 22304
[phone]
http://www.boatus.com
National Safe Boating Council
2550 M Street NW, Suite 425
Washington DC 20037
[phone]
www.safeboatingcouncil.org
U.S. Coast Guard Auxiliary
2100 Second Street SW
Washington DC 20593-001
[phone]
http://ww.uscg.mil
Safety Equipment
Federal law requires certain safety equipment to be on-board at all times. In addition, respon-
sible boaters carry other equipment in case of emergency. Check with the local boating authori-
ties for any additional requirements over and above the federal stipulations.
Required Equipment
Your MasterCraft has been equipped at the factory with most of the federally required safety equipment for inland
waters (Class I, 16-foot-to-26-foot watercraft). This equipment includes:
• ABYC-approved marine muffl ers with water injection;
• USCG-approved marine fl ame arrestor;
• USC-approved engine box ventilation with spark-less power blower;
• ABYC-approved electric horn sound-warning device;
• USCG-approved inland lighting.
Additionally, you should always check that you have onboard a fi re extinguisher, which is mandatory equipment
and sold as an optional purchase from the factory.
Federal law also requires at least one Type I, II or III Personal Flotation Device (PFD) for each person on-board or
being towed on water skis or other recreational equipment. In addition, one throwable Type IV PFD must also be on
board. As the owner, obtaining the appropriate PFDs is your responsibility. Your MasterCraft dealer can—and will
be—happy to assist you.
Note: Requirements for coastal waters and inland waters differ. Check with the local authorities for more information.
Recommended Equipment
A smart boat owner will avoid potential problems on an outing by having additional equipment on board. Nor-
mally, the decision regarding which equipment to take is dependent on the body of water and the length of the trip. We
suggest the following as a minimum. Your MasterCraft dealer can also assist you with additional recommendations.
• An anchor with at least 75 feet of line;
• A manual bailing device for removing water;
• A combination oar/boat hook;
• A day-and-night visual distress signal;
• A fi rst aid kit and manual;
• An airway breathing tube;
• A waterproof fl ashlight;
• A horn or whistle, non-electric;
• A set of local navigational charts
• Mooring lines and fenders;
2007 MasterCraft Owners Manual - Page 1-2