MasterCraft X25 User Manual

Storage & Winterization
pushing out gasoline vapor-and-air mixtures.
When the temperature falls, pressure lowers and
the system will seek to draw fresh air and water
vapor(dependingonthehumiditylevel)intothe
tank. Fresh air is replaced with “light ends,” which
are low-boiling components that vaporize at
ambienttemperatures.Lightendsarerequired
duringcoldstartstovaporizethefuel.Sincethe
daily diurnal cycles eliminate the light ends, a
nearly full tank helps to minimize the air volume
entering the system.
• Addabiocideadditiveinthefueltanktolimit
microbial growth in gasoline. Follow the direc-
tions provided by the stabilizer’s manufacturer.
• Addafuelstabilizer,suchasSta-Bil
®
, to the fuel
tank. Follow the directions provided by the stabilizer’s manufacturer.
• Runtheengineforatleastfteen(15)minuteswhileinabodyofwater.Thisallows
for the circulation of the additives throughout the fuel system.
• Ifpossibleduringstorage,thetankventsshouldbesealed.Iftheventissealed,
thetankmustNOTbecompletelylled.Aninety-to-ninety-vepercent(90-95%)
filled tank allows room for expansion, which will be required at certain times when
temperatures increase. The hydrocarbons in gasoline react with naturally occur-
ring oxygen and create a by-product known as “gum.” The substance, as the name
infers,plugsupfuelltersandinjectors.Sealingthetankhelpsreducegummingby
significantly limiting the amount of oxygen available for interaction with the hydro-
carbons.
Completely filling the fuel tank prior to
storage and then sealing the fuel tank
vent does not allow room for necessary
expansion. This can result, in extreme
conditions, in fuel tank rupture. Such
release of fuel into the boat and potentially into the storage area could
result in substantial damage to the boat and contact with any spark
(such as a flame-producing pilot light in a heater) could also result in
property damage and serious injury or death.
 Itisdesirabletokeepthefuel’stemperaturebelow80F.(26C.)Thegummingwill
increase as temperatures increase.
 NotethatfuelstabilizersworkONLYinfreshgasoline.Stabilizerswillnotcureoxy-
genated gasoline. Adding a stabilizer when the boat is being prepared for outings after
storage will NOT clean the gumming that has occurred or remove water from the fuel
tank or otherwise eliminate any problems that have occurred due to failure to properly
prepare the fueling system for storage.
 EnginemanufacturerssuggestusingFederalorStateofCaliforniareformulated
gasoline whenever possible as it stores as well or better than conventional gasoline.
Even quality gasoline that has been properly prepared for storage should never be
stored for a period to exceed one (1) year.
2013 MasterCraft Owners Manual • Care and Maintenance • Page 5-30

MasterCraft X25 Specifications

General

Brand	MasterCraft
Model	X25
Category	Boat
Language	English