Mercury 75 Service Manual page 90

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6. Remove RED sense lead wire (A) from starter so-

lenoid terminal and connect to the positive (+) ter-

minal of a 9 volt transistor battery. Ground the

negative (–) terminal of the 9 volt battery to the

a - Red Sense Lead (Female Connector)

7. Connect RED (+) ammeter lead to larger diame-

ter RED harness wire, and BLACK (–) ammeter

lead to POSITIVE terminal on starter solenoid.

8. Secure starter wires away from flywheel.

9. With engine running at the indicated RPM's, the

ammeter should indicate the following approxi-

mate amperes:

10. A reading of 16 amperes at 2000 RPM indicates

the charging system is functioning properly. The

battery is being discharged because of the

excessive amperage draw on the system (the

draw is greater than the amperage output of the

engine charging system).

11. If ammeter reads less than required amperes @

3000 RPM, test the stator; refer to "Stator Ohm

Test (Alternator Coils Only)". If stator tests OK,

replace voltage regulator.

2B-8 - ELECTRICAL

90-830234R3 DECEMBER 1997

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