Chaparral 420 PREMIERE, Owner'S/Operator'S Manual

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FUEL RECOMMENDATIONS
For the highest engine performance and long
engine life, it is important to use quality fuel. Fuel
should be clean and free of contamination. Your fuel
tanks should be kept full of fuel whenever possible.
This will reduce the amount of water condensation
and possibility of contamination.
CROSSOVER FUEL SYSTEM
(GENERATOR)
Your Chaparral boat is equipped with a generator
crossover fuel system. This system allows your
engines to draw fuel from either tank and lets you
switch to an alternate tank in case of fuel contami-
nation or for even fuel weight distribution.
The fuel will be consumed faster when generator is in
use. You might want to periodically select another fuel
tank for the generator for even weight distribution.
The generator crossover fuel board is located on the
fuel tank brackets in the forward end of the bilge.
(Figure 6.2)
FUEL FILTERS
Note: Refer to your engine owner’s manual for
detailed information about checking and main-
taining the fuel filter.
Chaparral boat has primary and secondary fuel fil-
ters to help keep the fuel as clean as possible.
Primary fuel filters are the Racor¨® water separating
fuel filters installed on the aft engine room bulkhead.
The generator fuel filter is located beneath the star-
board fuel filter on the aft engine room bulkhead.
The secondary fuel filters are located on the engines
and should be replaced in accordance with the
Engine Owner’s Manual.
Note: Using any methanol, gasohol or alcohol
based fuel additive will damage the fuel filter.
REFER TO THE ENGINE AND FUEL FILTER
OPERATOR’S MANUAL FOR MORE DETAILED
INFORMATION.
Fuel Filter Maintenance
A trained marine mechanic should replace parts or
repair the fuel system. See your Chaparral dealer
for parts and repair
One of the major reasons for poor starting or power
loss in a boat is the result of a clogged filter element
or fuel system air leak. Be sure to check that the fil-
ter lid and drain plug are properly tightened.
Inspect or drain the collection bowl of water daily.
To Drain Water:
1. Shut down the engine.
2. Loosen the T-handle on the top lid to break the
vacuum within the filter.
3. With an appropriate collection container in
place, remove the drain plug and let water and
contaminants into the container.
6-2
Figure 6.2 Generator Cross-Over Switch