Mercury 30 Service Manual

ELECTRICAL - 2B-590-826148R2 MARCH 1997
Stator Ohms Test-Alternator Coils
Only
NOTE: Stator can be tested without removing from
engine.
1. Disconnect both yellow (stator leads) from termi-
nals on rectifier (or terminal block) or disconnect
bullet connectors from voltage regulator.
2. Use an ohmmeter and perform the following test.
IMPORTANT: If stator is mounted on engine,
black stator lead (if provided) must be grounded
to powerhead when testing.
3. Replace stator if readings are outside ranges
shown.
9 AMPERE MANUAL STATOR (S/N-0G589999 &
BELOW)
Test Leads Resistance
(Ohms)
Scale Reading
(x−−−−)
Between YEL-
LOW Leads
.17 – .19* .17 – .19*
(R x 1)
Between either
YELLOW Lead
and Ground
No Continuity
No Continuity
(R x 1000)
9 AMPERE MANUAL STATOR (S/N-0G590000 &
ABOVE)
Test Leads Resistance
(Ohms)
Scale Reading
(x−−−−)
Between YEL-
LOW Leads
.16 – .19* .16 – .19*
(R x 1)
Between either
YELLOW Lead
and Ground
No Continuity
No Continuity
(R x 1000)
14 AMPERE STATOR
Test Leads Resistance
(Ohms)
Scale Reading
(x−−−−)
Between YEL-
LOW Leads
.22 – .24* .22 – .24*
(R x 1)
Between either
YELLOW Lead
and Ground
No Continuity
No Continuity
(R x 1000)
16 AMPERE STATOR (S/N-0G590000 & ABOVE)
Test Leads Resistance
(Ohms)
Scale Reading
(x−−−−)
Between YEL-
LOW Leads
.16 – .19* .16 – .19*
(R x 1)
Between either
YELLOW Lead
and Ground
No Continuity
No Continuity
(R x 1000)
18 AMPERE STATOR
Test Leads Resistance
(Ohms)
Scale Reading
(x−−−−)
Between YEL-
LOW Leads
.16 – .18* .22 – .24*
(R x 1)
Between either
YELLOW Lead
and Ground
No Continuity
No Continuity
(R x 1000)
*DC Resistance of these windings generally is less than 1.5
Ohms. If a reading resembling a short is obtained, this would
be acceptable.

Mercury 30 Specifications

General

Brand	Mercury
Model	30
Category	Outboard Motor
Language	English