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Mercury 90 User Manual

Mercury 90
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MAINTENANCE
41
3. Place the O-ring seal into its proper position on the sight bowl and screw the sight bowl hand tight into the
cover.
IMPORTANT: Visually inspect for fuel leakage from the filter by squeezing the primer bulb until firm, forcing fuel
into the filter.
Steering Link Rod Fasteners
IMPORTANT: The steering link rod that connects the steering cable to the engine must be fastened using special
washer head bolt ("a" - Part Number 10-849838) and self-locking nylon insert locknuts ("c" & "d" - Part Number
11-826709113). These locknuts must never be replaced with common nuts (non-locking) as they will work loose
and vibrate off freeing the link rod to disengage.
!
WARNING
Disengagement of a steering link rod can result in the boat taking a full, sudden, sharp turn. This potentially
violent action can cause occupants to be thrown overboard exposing them to serious injury or death.
ob00676
a
b
c
d
a - Special washer head bolt (10-849838)
b - Flat washer (2)
c - Nylon insert locknut (11-826709113)
d - Nylon insert locknut (11-826709113)
Description Nm lb. in. lb. ft.
Special washer head bolt 27 20
Nylon insert locknut "d" 27 20
Nylon insert locknut "c" Tighten until seats, then back off 1/4 turn
Assemble steering link rod to steering cable with two flat washers and self-locking nylon insert locknut. Tighten
locknut until it seats, then back nut off 1/4 turn.
Assemble steering link rod to engine with special washer head bolt and self-locking nylon insert locknut. First torque
bolt, then torque locknut to specifications.
Corrosion Control Anode
Your outboard has corrosion control anodes at different locations. An anode helps protect the outboard against
galvanic corrosion by sacrificing its metal to be slowly corroded instead of the outboard metals.

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Mercury 90 Specifications

General IconGeneral
BrandMercury
Model90
CategoryOutboard Motor
LanguageEnglish

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