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Mercury 20 EFI FourStroke Service Manual

Mercury 20 EFI FourStroke
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Propeller Replacement
!
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.
Removal
1.
Remove the spark plug leads to prevent the engine from starting.
26899
2. Shift the outboard into neutral (N).
F
N
R
63077
Tiller handle models
N
63103
Remote control models
3. Straighten the cotter pin and pull it out using a pair of pliers.
4.
Place a block of wood between the gearcase and the propeller to prevent rotation, and remove the propeller nut.
5. Pull the propeller straight off the shaft.
a - Cotter pin
b - Nut
c - Rear thrust washer
d - Front thrust hub
IMPORTANT: To prevent the propeller hub from corroding and seizing to the propeller shaft (especially in saltwater),
always apply the recommended lubricant to the entire propeller shaft at the recommended maintenance intervals and also
each time the propeller is removed.
a
c
b
d
31926
Maintenance
90-8M0125265 eng NOVEMBER 2017 © 2018 Mercury Marine Page 1B-13

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Mercury 20 EFI FourStroke Specifications

General IconGeneral
BrandMercury
Model20 EFI FourStroke
CategoryEngine
LanguageEnglish

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