1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 293Get this manual

1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 293

RectifierRegulator Tests12 Amp Models Variable Load Tests To test the operation of the rectifierregulator, you must be able
engine's battery cables 4Following the manufacturer's directions, connect the variable load tester (carbon pile) across the
battery terminalsSteven 's Instrument Model NoLB-85 and Snap-on Model NoMT540D are examples of testers available "" Excessive
battery discharge rates might overheat battery causing electrolyte gassingThis might create an explosive atmosphere 5Start
the engine and run it at approximately 4500 RPM Use the variable load tester to draw the battery down at rate equivalent
to the stator's full output 6The engine's ammeter should indicate full output12 amps 7Decrease the battery load toward zero
ampsThe engine's ammeter should .show reduced outputAs the current draw decreases, the battery voltage should stabilize at