Mercury 40 Service Manual page 102

The following "STARTING CIRCUIT TROUBLESHOOTING FLOW CHART" is designed as
an aid to troubleshooting the starting circuit. This flow chart will accurately locate any exist-
ing malfunction. Location of "TEST POINTS" (called out in the chart) are numbered in dia-
gram below.
STARTER
7
Blk = Black
Blu = Blue
Brn = Brown
Gry = Gray
Grn = Green
Orn = Orange
Pnk = Pink
Pur = Purple
Red = Red
Tan = Tan
Wht = White
Yel = Yellow
Starting Circuit Troubleshooting Flow Chart
No continuity indicated; there is an open circuit in the BLACK
NEGATIVE (-) battery cable between the NEGATIVE (-) battery
post and the powerhead.
Check cable for loose or corroded connections.
Check cable for open.
90-828631R3 MARCH 1999
20 AMP FUSE
6
Yel
1
Blk
–
+
BATTERY
Starter Motor Does Not Turn
SAFETY WARNING: Disconnect BLACK (starter motor)
cable from starter solenoid test point 1 BEFORE making
tests 1-thru-7 to prevent unexpected engine cranking.
TEST 1
Use an ohmmeter (R x 1 scale) and connect meter leads be-
tween NEGATIVE (-) battery post and common powerhead
ground.
Yel/ Red
Red/ Pur
Red
3
STARTER
SOLENOID
Blk
2
Blk
Continuity Indicated
Proceed to TEST 2, on next page.
CHARGING AND STARTING SYSTEM
NEUTRAL START SWITCH
Yel/ Red
Yel/ Red
Red
4
5
IGNITION SWITCH
Page 2B-15