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Self contained Totalizer with permanent LCD display records fuel consumed up to 99,999 gallons. Resettable or non-resettable totalizer operating mode. SPST type switch required for resetting totalizer. We recommend Sierra Marine part number TG40020 for this feature.
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Model 20B Flow Sensor with solid state signal generator for maintenance free use. Installs between tank and fuel pump.
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Model 231 Flow Sensor features extremely low flow resistance. Recommended for carbureted and 2-stroke EFI outboard engines 150 HP and over where system flow resistance should be minimized. Installs between priming bulb and fuel tank.
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Microprocessor-based electronics with user adjustable totalizer calibration for superior accuracy. Panel mounted instrument fits 3-1/16" diameter opening.
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Models available with 0-5, 0-10, 0-20, 0-32, 0-50, and 0-100 GPH scales. HP rating will determine the best GPH scale to use.
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Twin engine models show the individual flow rates to each engine with an external toggle switch. The totalizer records the fuel consumption of one or both engines and can be reset with an external toggle switch. See Accessories page for recommended toggle switch (4001-434-00) for these features.
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Applications
Fits all carbureted inboard and stern drive engines up to 350 hp.
Fits all EFI inboard and stern drive engines (including Mercruiser and Volvo) with closed loop fuel return systems.
Fits all Mercury Optimax, Evinrude Ficht, Yamaha HPDI, and Honda 4-stroke engines.
Fits all 2-stroke EFI outboard engines.
Important note for the following outboard engine owners:
- Evinrude E-Tec 2-cycle
- Mercury Verado 4-cycle
- Suzuki 4-cycle
- Yamaha 4-cycle
The engines listed above have two fuel pumps. Because the engine's lift, or low pressure pump cycles on and off while filling the vapor separation module, the FloScan instrument GPH/LPH readings will constantly fluctuate between 0 GPH/LPH and approximately 25-50 GPH or 95-190 LPH depending on lift pump and engine size. Though the GPH/LPH readings are unusable, the FloScan instrument will accurately record total fuel consumption as displayed in the totalizer window.
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