Download - Northstar
Download - Northstar
Download - Northstar
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Indexoverview 11safety considerations 11troubleshooting 21wiring 14transducercautions 3, 5, 19cavitation 5hull thickness limits 6noise problems 5preferred mounting location 5recommended incline angle 8thru-hull installation with a fairing block 8MMaintenance, transducer 8N<strong>Northstar</strong>feedback on manuals 25website. See Website addresses<strong>Northstar</strong> 491 Echo Sounder. See Echo sounder<strong>Northstar</strong> 957/958 GPS/WAAS Chart Navigator 18<strong>Northstar</strong> 957/958/6000i GPS/WAAS Chart Navigator 1<strong>Northstar</strong> 961/962 GPS Chart Navigator 1PParts, ordering. See Technical supportSSafety considerations491 11transducer 3Software upgrades, obtaining 18Specifications 27STAT (status) indicator light 18TTechnical supportcontacting <strong>Northstar</strong> 24ordering parts 25repairing the 491 25repairing the transducer 25Transducerdefinition of 29installation. See Installation, transducermaintenance. See Maintenance, transducermounting. See Installation, transducerrecommended 4service, parts and repair 25Troubleshootingdiagnostics screen 21flow chart 23installation checklist 19installation problems 21PAGE 32491 INSTALLATION MANUAL Revision A
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