Charging System Tests - Evinrude E-Tec 40 HP Service Manual

ELECTRICAL AND IGNITION

CHARGING SYSTEM TESTS

R S M
OPE TART ODELS
Use a Pea k Read ing Voltmeter, P/N 507972, to
check st ator output volt age. Set meter to
50 VAC scale.
A
WARNING
To prevent accidental starting of outboard,
disconnect crankshaft position sensor
(CPS).
Disconnect CPS. Remove spark plugs. Make sure
outboard is in NEUTRAL.
PLUGS on p. 42.
Disconnect stator (6-pin) co nnector from the
engine harness (6-pin) connector.
Connect Stator Test Adaptor tool, P/N 5005799, to
stator connector.
Connect meter leads to terminals of adaptor tool.
Rotate the flywheel with the st arter rope, using a
long, steady pull.
Stator o utput voltage should be
30 VAC.
1. Stator Test Adaptor
Index all sp ark plu gs. Refer to
IMPORTANT:
Spark Plug Indexing on p. 42.
98
the
Refer to SPARK
approximately
1
006750
CHARGING SYSTEM
TESTS
12 V Charging Circuit
To test the o peration of the regulator in the EMM,
you must be able to run the outboard continuously
at approximately 5000 RPM, such as in a test tank
or on a marine dynamometer.
The test consist s of mo nitoring the system' s
response to a partially discharged battery. Use a
variable load tester to discharge the battery.
The regulator requ ires volt age to
IMPORTANT:
operate. Before proceeding, make sure there is at
least 7 V on th e positive te rminal of the st arter
solenoid.
Disconnect the battery cables at the battery.
Use an in ductive amp meter or con nect a 0 to
50 A ammeter in series between the red wire of
engine wire harness (alternator output from EMM)
and the po sitive (B+) battery cable ter minal of
starter solenoid.
† model 334 or 336, Snap-On
Fluke
or EETA501, and va rious oth er amp meters
should be available through local tool suppliers.
Reconnect the battery cables.
† model MT110