2021 OWNERS MANUAL / 320
ILMOR OWNER’S MANUAL 
MasterCraft boats are equipped with ILMOR Marine Engines, the 
finest quality power plant in the industry. ILMOR supplies an Owner’s 
Manual with the purchase of your MasterCraft boat. For inquiries 
regarding ILMOR specific components contact : 
ILMOR MARINE, LLC (U.S.A.) 
www.Ilmor.com 
186 Penske Way 
Mooresville, NC 28115 
844-GO-ILMOR  (844-464-5667)   
(704) 360-1901 FAX 
service@ilmormarine.com
GASOLINE
Additional, critical information regarding the proper use of gasoline 
in relation to the ILMOR Marine Engine is contained in the engine 
owner’s manual, including but not limited to:
•  What type of gasoline to use
•  Avoiding oxygenated fuels or fuels with alcohol
•  What to do when the boat is not used for long periods of time
•  Fueling outside the United States and Canada.
Damage to the engine by use of low-quality gasoline or gasoline 
with an octane rating below the minimum level listed for ILMOR 
MV8 engines will void the warranty on the engine. Extended 
storage with fuel in the system can aect fuel stability and may 
require system inspection and fuel filter replacement when the 
boat returns to service.
Troubleshooting the Fuel System
Fuel Pump Does Not Run When The Engine Start-Stop  
Button Is Pressed
Cause 1
Pump may not be receiving sucient voltage to the pump, or there 
may be corrosion interfering with the electrical impulse.
Remedy 1
Take the boat to an authorized MasterCraft dealer. Only the dealer 
has the specialized, required tools to correct the problem.
Cause 2
The fuel pump relay may have tripped.
Remedy 2
Reset the relay on the EPDM screen on the dash. 
2021MCOwnerManualFINAL.indd   320 8/26/20   1:54 PM