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Mercury 150 - Spark Plug Inspection and Replacement

Mercury 150
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MAINTENANCE
41
8. Flo-Torq II Drive Hub Propellers - Install forward thrust hub, replaceable drive sleeve, propeller,
thrust hub, propeller nut retainer and propeller nut onto the shaft.
b
c
a
d
f
e
ob00421
a - Propeller nut
b - Propeller nut retainer
c - Rear thrust hub
d - Propeller
e - Replaceable drive sleeve
f - Forward thrust hub
9. Place a block of wood between gearcase and propeller and torque propeller nut to specifications.
Description Nm lb. in. lb. ft.
Propeller nut 75 55
10. Secure propeller nut by bending three of the tabs into the thrust hub grooves.
ob00422
Spark Plug Inspection and Replacement
!
WARNING
Avoid serious injury or death from fire or explosion caused by damaged spark plug boots. Damaged
spark plug boots can emit sparks. Sparks can ignite fuel vapors under the engine cowl. To avoid
damaging spark plug boots, do not use any sharp object or metal tool such as pliers, screwdriver, etc.
to remove spark plug boots.
1. Remove the spark plug leads. Twist the rubber boots slightly and pull off.
ob00375

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