Four winns 338 Vista Owner's Manual page 66

Figure E9: Compass
After all personal equipment is installed, including all
electronics (VHF radio, GPS, chart plotter, etc.), the
compass must be properly calibrated. DO NOT rely
on the compass readings until initial adjust ment
(compensation) has been performed. The boat has a
factory installed compass, the manu factur er's instruc-
tions are provided in the owner's packet. Most areas
have local com panies that special ize in compass
adjustment. If unsure of the proper compensation
techniques, consider having the adjustment done
professional ly to insure accuracy and confi dence in
the compass.
NOTICE
During use, keep all extraneous metal objects
away from the compass. The close proximity of
metal objects (e.g., beverage cans) can cause
compass devi a tion.
M. Instrument Maintenance
Electrical protection for instruments and ignition
circuitry is provided by a circuit breaker on the ignition
panel. Periodically, spray the ignition switches with a
contact clean er. The ignition switches and all instru-
ments, controls, etc. should be protected from the
weath er when not in use. Four Winns offers appropri-
ate weather covers for each mod el. Excessive expo-
sure can lead to gauge and igni tion switch difficul ties.
DO NOT use a product such as WD-40 as
a contact cleaner. Be sure to read the label
before using any product.
Engines, Drives and Instrumentation - Section E
Electronic gauges are affected by static electricity that
builds-up on the glass face. Periodic washing of the
gauge face with warm water and mild liquid detergent
will help eliminate the static electric ity problem and
improve gauge accuracy.
Owner's Manual Page 63