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Mercury FourStroke 3.5 User Manual

Mercury FourStroke 3.5
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Gear Housing
90-8M0065421 NOVEMBER 2012 Page 6A-11
3. Note the color of the gear lubricant. White or cream color indicates the presence of water in the lubricant. Check the drain
pan for water separation from the lubricant. The presence of water in the gear lubricant indicates the need for disassembly
and inspection of the oil seals, seal surfaces, O‑rings, and gear housing components. Pressure check the gearcase prior to
disassembly and again after reassembly to verify repairs have been properly completed.
a - Oil level screw with gasket
b - Oil fill screw with gasket
Propeller Removal
!
WARNING
Rotating propellers can cause serious injury or death. Never operate the boat out of the water with a propeller installed.
Before installing or removing a propeller, place the drive unit in neutral and engage the lanyard stop switch to prevent the
engine from starting. Place a block of wood between the propeller blade and the anti‑ventilation plate.
1. Remove the cotter pin and pull the propeller off of the propeller shaft.
2. Remove the drive (shear) pin.
a - Cotter pin
b - Drive (shear) pin
Gear Housing Removal
1. Close the fuel shut‑off valve.
OIL LEVEL
OIL
b
b
a
25501
a
a
b
25519

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Mercury FourStroke 3.5 Specifications

General IconGeneral
BrandMercury
ModelFourStroke 3.5
CategoryOutboard Motor
LanguageEnglish

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