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Outboard Motor Tester

Test operations of outboard motors in tanks.

What does an Outboard Motor Tester do?

Tests operation of outboard motor in tank and repairs, adjusts, or replaces parts according to specifications and engineering requirements, using measuring instruments and handtools: Lowers motor on test frame into water tank, using chain hoist, and inspects wiring, screws, plugs, and assemblies for missing or broken parts. Starts motor and listens to and inspects it for signs of malfunctioning, such as smoke, excessive vibration, and misfiring. Holds tachometer against turning shaft and reads revolutions per minute. Verifies timing of cam gears, idle gear, and flywheel, using stroboscope. Turns regulating screws on carburetor to adjust idle speed, choke, and high-low speed. Sets starter lock and aligns shift lever shaft with indicated marks for speeds, using gauges, screwdrivers, and wrenches. Measures voltage, amperage, and polarity, using ammeter, voltmeter, and polarity gauge. Idles motor and observes thermometer to determine effectiveness of cooling system. Writes test report to indicate acceptance or reason for rejection of motor. Oils carburetor. Stamps identification number on motor, using hammer and metal stamping equipment. May test specific aspects of engine performance, such as fuel consumption, compression, and power output, and recommend modifications to improve engine performance and be designated Life Tester, Outboard Motors.