1995 Johnson/Evinrude Outboards 9.9, 15 four-stroke Service Manual, Page 202Get this manual

1995 Johnson/Evinrude Outboards 9.9, 15 four-stroke Service Manual, Page 202

RectifierRegulator Tests Variable Load Tests To test the operation of the rectifierregulator, you must be able to run the
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 availableExcessive battery discharge rates might overheat
battery causing electrolyte gassingThis might create an explosive atmosphere 5Start the engine and run it at approximately
3000 RPM, 6-amp system, or 5000 RPM, 12-amp systemUse the variable load tester to draw the battery down at rate equivalent
to the stator's full output The ammeter should indicate nearly full outputor 12 amps Decrease the battery load toward zero
amps Ammeter should show reduced outputAs the current draw decreases, the battery voltage should stabilize at approximately
14.5 volts If your results vary, check the stator's condition before replacing the rectifierregulator Safety Related 4-CycleJeng