User manual NORTHSTAR EXPLORER 657

[. . . ] Explorer 657 Fishfinder and Chartplotter Installation and Operation Manual www. northstarnav. com IMPORTANT SAFETY INFORMATION Please read carefully before installation and use. DANGER !It is used to alert you to potential personal injury hazards, Obey all safety messages that follow this symbol to avoid possible injury or death. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury CAUTION indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage. [. . . ] On a multi-tank boat, select Fill tank, then select the tank you have filled. Note: Underfloor fuel tanks are often difficult to refill to the same level twice, due to air pockets. With underfloor fuel tanks: Trim the boat to the same angle in the water each time you follow procedure A. Mostly use procedure B below when adding fuel, but completely fill the tank and follow procedure A about every tenth time you add fuel. 2 B 1 When you partially fill a tank Add fuel to a tank and write down how much fuel you add. From the Fuel window, press select Add fuel. and On a multi-tank boat, select the tank that you have added fuel to. Change the number to the amount of fuel that you added. Note: If you follow procedure B every time you add fuel, then a small error will accumulate, because it is hard to measure exactly how much fuel you add. To avoid this, completely fill the tank and follow procedure A about every tenth time you add fuel. 46 Northstar Explorer 657 Installation and Operation Manual C 1 2 3 When you remove fuel Before removing fuel, go to the Fuel window, press and select Set remaining. On a multi-tank boat, select the tank that you are removing fuel from. Write down the value of Remaining for the tank; this is the amount of fuel originally in the tank. Remove fuel from the tank and write down how much fuel you remove. Subtract the amount of fuel you removed from the amount of fuel originally in the tank to calculate the amount of fuel now in the tank. 6 Change the number on the Set Remaining menu to the amount of fuel that you calculated was now in the tank. Press 7 4 5 Note: You can also use this procedure when you add fuel to a tank. In this case, add the fuel you have added to the amount of fuel originally in the tank to calculate the amount of fuel now in the tank. 12-4 Low fuel alarm To set a low fuel alarm for a tank: 1 2 3 Press twice, select Fuel then select Setup tanks. On a multi-tank boat, select the tank to set the alarm for. Select Tank alarm and enter a fuel level to trigger the low fuel alarm. When a low fuel alarm is set, the alarm's fuel level is shown on the fuel window tank levels as a red bar. The alarm can also be set using the Alarms setup menu (see section 17-9) 12-5 Boat speed sensors 12-5-1 Selecting a boat speed sensor The fuel calculations can use boat speeds from the GPS, or from a paddlewheel sensor or pitot sensor if these optional sensors are installed: Paddlewheel and pitot sensors measure the speed through the water; GPS speed is speed over ground; these sensors can give different values for Range, Economy and the fuel consumption curves (see section 12-5-2). A pitot sensor is more accurate than a paddlewheel sensor at high speeds but is not accurate at low speeds. A paddlewheel sensor is more accurate than a pitot sensor at low speeds. To select an optional speed sensor 1 2 Press twice, select Fuel and select Speed source. [. . . ] A feature of marine radios enabling communication between specific vessels, as well as distress alerts. Goto - A simple way of navigating straight to a waypoint or to the cursor position (see section 3-1). A satellitebased navigation tool (see section 7). Leg - The straight segments of a route between waypoints. [. . . ]