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Mercury 4 TwoStroke User Manual

Mercury 4 TwoStroke
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8. Place a block of wood between the gearcase and the propeller to prevent
rotation and tighten the propeller nut. Secure the propeller nut to the shaft
with a cotter pin.
a - Cotter pin
b - Propeller nut
c - Rear thrust hub
d - Propeller
e - Front thrust washer
Propeller Selection
The propeller must be selected that will allow the engine to reach
recommended RPM when cruising at wide‑open throttle.
Wideopen throttle RPM range
4500–5500
Recommended propellers are listed under Propeller Recommendation in the
Accessories section of this manual.
Spark Plug Inspection And Replacement
!
WARNING
Damaged spark plug boots may emit sparks that can ignite fuel vapors under
the engine cowl, resulting in serious injury or death from a fire or explosion.
To avoid damaging the spark plug boots, do not use any sharp object or
metal tool to remove the spark plug boots.
1. Remove the spark plug boot. Twist the rubber boot slightly and pull off.
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27094
MAINTENANCE
eng 43

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Mercury 4 TwoStroke Specifications

General IconGeneral
BrandMercury
Model4 TwoStroke
CategoryOutboard Motor
LanguageEnglish

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