EasyManuals Logo
Home>Mercury>Outboard Motor>90

Mercury 90 Service Manual

Mercury 90
574 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #73 background imageLoading...
Page #73 background image
90-830234R3 DECEMBER 1997 ELECTRICAL - 2A-35
Ignition (Key) Switch Test
1. Disconnect remote control wiring harness and
instrument panel connector.
NOTE: Wiring diagram for control boxes is located in
SECTION 2D.
2. Set ohmmeter on R x 1 scale for the following
tests:
COMMANDER KEY SWITCH
BLK BLACK
PUR PURPLE
RED RED
YEL YELLOW
C
B
M
A
M
S
(PUR)
(BLK)
(YEL/RED)
(YEL/BLK)
(RED)
(BLK/YEL)
KEY
CONTINUITY SHOULD BE INDICATED
AT THE FOLLOWING POINTS
KEY
POSITION
BLK BLK/YEL RED YEL/RED PUR YEL/BLK
OFF
RUN
START
CHOKE*
* Key switch must be positioned to “RUN” or “START” and key
pushed in to actuate choke, for this continuity test.
3. If meter readings are other than specified in the
preceding test, verify that switch and not wiring is
faulty. If wiring checks OK, replace switch.
Flywheel Removal and
Installation
REMOVAL
1. Remove flywheel cover from engine.
WARNING
Engine could possibly start when turning fly-
wheel during removal and installation; therefore,
disconnect (and isolate) spark plug leads from
spark plugs to prevent engine from starting.
2. Disconnect spark plug leads from spark plugs.
3. While holding flywheel with Flywheel Holder
(91-52344), remove flywheel nut and washer.
a
51123
a - Flywheel Holder (91-52344)
4. Install Crankshaft Protector Cap (91-24161) on
the end of crankshaft, then install Flywheel Puller
(91-73687A1) into flywheel.
5. Remove flywheel.
NOTE: Neither heat or hammer should be used on
flywheel to aid in removal as damage to flywheel or
electrical components under flywheel may result.
a
b
51124
a - Flywheel Puller
b - Flywheel

Table of Contents

Other manuals for Mercury 90

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Mercury 90 and is the answer not in the manual?

Mercury 90 Specifications

General IconGeneral
BrandMercury
Model90
CategoryOutboard Motor
LanguageEnglish

Related product manuals