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<p><strong>Chesapeake White SS 4" Tachometer w/Systemcheck Indicator - 7000 RPM (Gas - Johnson/Evinrude Outboard)</strong></p><p>Perimeter-lighted White dial with stylish Blue and White graphics, polished stainless steel bezel, contoured White pointer and domed glass lens. </p><p>Tachometers work by counting pulses generated by the ignition system, alternator, tach signal generator or magnetic pickup sender. The tach is hooked up to +12VDC, Ground and one of the signal sources listed.</p><p>By selecting the right tach and setting the switch on the back to the correct position you let the tachometer know how many pulses are sent per each engine revolution.</p><p>These tachometers have a warning light system built into the dial that show off warning indicators when a fault is detected from the engine.</p><p><strong>SystemCheck Warnings:</strong></p><ul><li>No Oil</li><li>Engine Overheat</li><li>Check Engine</li><li>Low Oil</li></ul><p>4" - Hole size: 3.375" (85mm)</p><p><strong>For Engine Types:</strong></p><ul><li>Johnson/Evinrude Outboard</li></ul><p><strong>Specifications:</strong></p><ul><li>Anti-scratch glass lens</li><li>Plastic Cases for corrosion resistance and long life</li><li>12 VDC negative ground</li><li>Can be adapted for 24 VDC systems</li></ul><p>Factory P/N TC9881</p><p>*Sold as an Individual</p><p>**Gauge Cover not Included</p> <!--- cis2:m2hqmpZo --->