Guide to Troubleshooting
2007 MasterCraft Owners Manual - Page 19-1
The following charts will assist you in fi nding and correctly minor mechanical and electrical problems with your
boat. Problems are listed in the order of the most-likely event to the least-likely.
To correct a problem, fi rst determine what the symptom is. Start with the fi rst cause and eliminate the possibility
of each until the problem is corrected. Because of the specialized skill and tools needed to correct major issues, we have
not included that information. If you suspect a problem not addressed here, please contact your MasterCraft dealer.
If you are experiencing a problem, before shutting down your boat check your surroundings. If suddenly stopping
the power would result in placing other boats in the vicinity in jeopardy, continue on until you can safely slow or stop to
analyze your situation. Always be aware of your surroundings and how your actions may impact other boaters!
Problem
Engine will not turn over.
Possible Causes
Safety switch tether not connected.
Throttle/shift control in gear.
Main circuit breaker open.
Battery terminal corroded.
Battery weak or worn out.
Loose or corroded battery wiring connectors.
Defective starter solenoid.
Defective neutral safety switch.
Defective starter motor.
Solution
Connect the safety switch tether.
Shift to neutral.
Re-set the circuit breaker.
Clean the battery terminals.
Charge or replace the battery.
Clean and tighten the battery wiring connectors.
Replace the starter solenoid.
Replace the neutral safety switch.
Replace the starter motor.
Engine turns over but will not start.
Safety switch tether not connected.
No fuel to the engine.
No fuel in the tank.
Fuel fi lter clogged.
Contaminated fuel.
Weak or shorted ignition coil.
Distributor problems.
Connect the safety switch tether.
Turn the fuel valve to ON position if the boat is
equipped with ON-OFF switch.
Fill the fuel tank.
Have dealer replace the fuel fi lter.
Drain fuel properly and have dealer replace the
fi lter.
Replace the ignition coil.
See your dealer.
Engine is hard to start.
Flooded engine.
Plugged fl ame arrestor.
Fouled spark plugs.
Loose coil or ignition wires.
Battery cables loose or corroded.
Weak battery.
Ignition problems.
Start the engine at full throttle and back off im-
mediately.
Clean the fl ame arrestor.
Replace the spark plugs.
Tighten coil or ignition wires.
Clean and tighten the battery cables.
Charge or replace the battery.
See your dealer.
Engine misses or idles rough.
Fouled spark plugs.
Loose or defective high-tension leads.
Plugged PCV valve.
Weak ignition coil.
Vacuum leak.
Have your dealer replace the spark plugs.
Have your dealer tighten or replace the high-ten-
sion leads.
Have your dealer replace the PCV valve.
Have your dealer replace the ignition coil.
See your dealer.
Summary of Contents for 2007 MariStar
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