Mercury MerCruiser 4.3 TKS, User Manual

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Section 5 - Maintenance
90-899883179 OCTOBER 2007 Page 65
Propellers
Propeller Repair
Some damaged propellers can be repaired. Contact your authorized Mercury MerCruiser
dealer.
Alpha 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. Place wood block between propeller blade and anti‑ventilation plate to prevent rotation.
Straighten bent tabs on tab washer.
2. Turn propeller shaft nut counterclockwise to remove nut.
3. Slide tab washer, drive sleeve, propeller and thrust hub off propeller shaft.
Alpha Propeller Installation
NOTICE
Operating the engine with a loose propeller can damage the propeller, the drive, or drive
components. Always tighten the propeller nut or nuts to specification and check for
tightness periodically and at the required maintenance interval.
IMPORTANT: If reusing tab washer, carefully inspect tabs for cracks or other damage.
Replace tab washer if condition is questionable.
a
b
c
d
e
g
6215
f
a - Propeller shaft
b - Thrust hub
c - Flo‑Torq II drive hub
d - Propeller
e - Drive sleeve
f - Locking tab washer
g - Propeller nut
1. Apply a liberal coat of one of the following lubricants to the propeller shaft.
Tube Ref No. Description Where Used Part No.
34
Special Lubricant 101 Propeller shaft 92-802865Q02