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Mercury 90 Service Manual

Mercury 90
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90-830234R3 DECEMBER 1997 ATTACHMENTS/CONTROL LINKAGE - 7A-27
Drilling Outboard Mounting Holes
IMPORTANT: Before drilling any mounting holes,
carefully read “Determining Recommended Out-
board Motor Mounting Height”, preceding. There
is a 3/4 in. (19mm) difference between outboard
mounting holes in transom bracket.
WARNING
DO NOT, under any circumstances, allow upper
outboard mounting bolts to be closer than 1 in.
(25.4mm) from top of boat transom. Upper
mounting bolts must never be installed thru
shims.
IMPORTANT: If using “Transom Drill Fixture”
(91-98234A2), use drill guide holes marked “A”
when drilling outboard mounting holes.
Lifting Engine
WARNING
Make sure that lifting eye is threaded into fly-
wheel a minimum of 5 turns and that hoist has a
minimum lift capacity of at least 500 lbs. (227 kg)
BEFORE lifting engine.
1. Remove cowling from engine and plastic cap
from center of flywheel. Thread lifting eye into fly-
wheel hub a minimum of 5 turns. Replace plastic
cap after installation.
2. Connect hoist [minimum lift capacity of 500 lbs.
(227 kg)] to lifting eye. Lift engine and place on
boat transom.
b
a
25929
a - Lifting Eye (C-91-75132)
b - Hoist
Installing Engine to Transom
CAUTION
Marine sealer must be used on shanks of mount-
ing bolts to make a water-tight installation.
NOTE: Because of clearance on some boats it will be
necessary to install steering cable on engine before
installing engine to transom. Refer to page 1 of this
instruction.
IMPORTANT: DO NOT use an impact driver when
tightening transom mounting bolts.
1. Determine engine mounting height dimension
from graph (STEP 1) and use engine mounting
holes that will position engine nearest to recom-
mended height.

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Mercury 90 Specifications

General IconGeneral
BrandMercury
Model90
CategoryOutboard Motor
LanguageEnglish

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