Grady-White Boats Canyon 456, Manual, Page: 51 / 90

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Chapter 6: Maintenance and Service
Fuel Tank Compartment
The fuel tank compartment needs to be rinsed periodically especially when used in a salt-water
environment. Dirt accumulation attracts salt, creating salt crystals. Salt crystals can corrode most
metal surfaces if left untreated over a period of time. To help protect your fuel tank from corrosion,
rinse the compartment with
fresh water. After rinsing, make sure all water is drained from the
compartment. Open the rectangular access doors on the floor inside the helm seating station and
inspect this area for leaks or unsecured lines. These access doors keep the fuel compartment
sealed. Over time, the opening and closing of these plates causes the o-rings to wear out. Replace
these o-rings as necessary to maintain the watertight integrity of the plates.
Shower Sump
The shower in the head compartment and condensation from the cabin air conditioner drain
into a contained “sump” which is used to prevent hair, soap, scum and bacteria from accumulating
in the bilge and creating odors. This sump should be cleaned regularly, and is located under the
teak grate and removable subfloor in the shower. The sump pump box contains a filter. Remove the
filter and rinse with water to clean. The filter should always be installed when using the shower to
prevent the sump pump from becoming clogged.
Batteries
Proper battery power is essential to the operation of your vessel. For this reason, Grady-White
has carefully chosen batteries with cranking ability and reserve capacity sufficient to meet your
needs. Grady-White uses Deka Intimidator 8A27M brand marine batteries. If your boat is equipped
with batteries not installed at the factory, consult with the battery manufacturer for proper care and
maintenance instructions and the engine manufacturer for appropriate battery specifications.
Replacements batteries should always be of the same brand, model, age and size. Never mix
different types of batteries.
The Intimidator 8A27M is an absorbed glass mat (AGM) battery that is completely spill proof
and maintenance free. AGM batteries recharge faster than conventional batteries and have a higher
tolerance to deep discharge for more severe applications. AGM batteries are subject to permanent
damage if used with a charging system not compatible with this technology, which should be
considered if using a charging system other than those installed on your boat.
Batteries contain electrolytes and acids that can be harmful and volatile. They can also present
an electrical hazard. When handling or servicing batteries, exercise caution and follow these
guidelines.
• Avoid contact with skin, eyes, and clothing. Protective gloves and eye wear should be
worn when servicing to minimize risk.
• Batteries can produce explosive gases. Ventilate when charging. Keep sparks, flames and
cigarettes away at all times.
• An insulated boot should cover battery terminals in normal use. Never allow anything
metal to bridge between the positive and negative terminals which could arc or create a
burn hazard.