MasterCraft NXT20 2023, Owner'S Manual

Page: 234 / 490

2023 OWNER’S MANUAL / 228
Location
The exhaust tip is found on the stern of the boat.
Troubleshooting
The underwater exhaust system should be routinely inspected for
leaks. Any serious damages to the underwater exhaust or adjacent
components should be repaired by an authorized MasterCraft
dealer. For more information on exhaust maintenance, please see
the “Care and Maintenance” section of this manual.
Exhaust system leaks may allow excessive amounts of water
into the boat. This can damage or sink the vessel. Have any leaks
promptly repaired by an authorized MasterCraft dealer.
BLOWER SYSTEM
Models
All models have a blower system.
Purpose
The blower system is one of the most critical systems on the
boat. A natural by-product of operating the engine is the creation
of unseen fumes. Carbon monoxide is discussed in the Safety
section of this Owner’s Manual. The engine will also create
flammable, ignitable gasoline and/or battery fumes. Dispensed
into the open air, they are quickly diffused and pose little to no
threat to well-being. However, if the fumes are not released by
opening the engine compartment and operating the blower for a
minimum of four (4) minutes before starting the engine (even if
the engine has not been operated for some time), the fumes may
explode when the engine is started.
To prevent a possible explosion, the blower will automatically
run for four (4) minutes when the key switch is turned to the ON
position. You should always 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 operate the
blower as instructed may cause improper ventilation of the boat
engine and bilge areas, and fuel vapors can accumulate in this
area, causing a fire or explosion which may result in serious injury
or death!