1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 324Get this manual
No Load Current Draw, Electric Starter Securely fasten starter in vise or other suitable fixture before proceeding with this check1Locate battery rated at 500 cold cranking amps or higher that is in good condition and fully chargedto perform this testf191 2Connect 0-100 amp ammeter in series with heavy jumper between the battery "+" terminal and the starter +" terminal3Attach or hold vibration tachometer, such as Frahm Reed achometer, to the starter while performing the testWhen performing this test on the Bosch starter, the driven gear and pinion assembly must be removedf19l 4Complete the circuit with heavy jumper between the battery "_" terminal and the starter frame5Monitor the starter rpm and current draw and refer to the chart below for the correct specificationsNo Load Current Draw Specifications