Mercury 45 Jet 50-55 - Ignition (Key) Switch Test; Ignition Components Removal and Installation; Flywheel; Removal

ELECTRICAL and IGNITION - 2A-790-817643R1 DECEMBER 1996
Ignition (Key) Switch Test
1. Disconnect remote control wiring harness and instru-
ment panel connector.
NOTE: Wiring diagram for control boxes is located in SEC-
TION 2D.
2. Set ohmmeter on R x 1 scale for the following tests:
COMMANDER 2000 KEY SWITCH
23894
COMMANDER KEY SWITCH
(PUR)
(BLK)
(YEL/RED)
(YEL/BLK)
(RED)
(BLK/YEL)
C
B
M
A
M
S
KEY
POSITION
BLK BLK/YEL RED YEL/RED PUR
•
CONTINUITY SHOULD BE INDICATED
AT THE FOLLOWING POINTS:
OFF
RUN
START
CHOKE*
•
••
•
•
••
•
•
•
•
• •
•
•
YEL/BLK
*Key switch must be positioned to “RUN” or “START” and key pushed
in to actuate choke, for this continuity test.
BLK
•BLACK
PUR
•PURPLE
RED
•RED
YEL
•YELLOW
3. If meter readings are other than specified in the pre-
ceding test, verify that switch and not wiring is faulty.
If wiring checks OK, replace switch.
Ignition Components
Removal and Installation
Flywheel
REMOVAL
1. Remove flywheel cover from engine.
! WARNING
Engine could possibly start when turning flywheel
during removal and installation; therefore, disconnect
(and isolate) spark plug leads from spark plugs to pre-
vent engine from starting.
2. Disconnect spark plug leads from spark plugs.
3. While holding flywheel with Flywheel Holder (a)
(91-52344), remove flywheel nut and washer.
51123
a
4. Install Crankshaft Protector Cap (91-24161) on the
end of crankshaft, then install Flywheel Puller (a)
(91-73687A1) into flywheel (b).
5. Remove flywheel.
NOTE: Neither heat or hammer should be used on flywheel
to aid in removal as damage to flywheel or electrical com-
ponents under flywheel may result.
51124
a
b