Propeller Installation - Mercury 150 EFI Service Manual

Propeller Installation

When installing or removing propeller, because of the engine's ease in starting,
VERIFY that the remote control is in NEUTRAL position and that the key switch
is "OFF." Place a block of wood between the anti-cavitation plate and propeller
to prevent accidental starting and to protect hands from propeller blades while
removing or installing nut.
1. To aid in future removal of the propeller, liberally coat the propeller shaft splines with
one of the following Quicksilver products:
2. Place forward thrust hub over propeller shaft with shoulder side toward propeller.
3. Place propeller on propeller shaft and slide it up against thrust hub.
4. Place continuity washer (if equipped) onto shoulder of rear thrust hub.
5. Place rear thrust hub, tab washer and propeller nut on propeller shaft.
6. Thread propeller nut onto propeller shaft until nut is recessed into tab washer.
7. After propeller nut is recessed into tab washer, tighten nut securely [minimum of 55
Ib. ft. (74.5 Nm) torque].
8. Bend 3 of the tabs of tab washer down in grooves of rear thrust hub to secure propeller
nut. (If tab washer tabs do not align with slots, continue to tighten propeller nut to ob-
tain alignment. DO NOT loosen nut to align tabs.)
a
b
b
a -
b -
c -
DO NOT misinterpret propeller shaft movement with propeller movement. If pro-
peller and propeller shaft together move forward-and-aft, this is normal; however,
propeller should not move forward-and-aft on propeller shaft.
9. After first use, retighten propeller nut and again secure with tab washer (Steps 7 and
8, preceding). Propeller should be checked periodically for tightness, particularly if a
stainless steel propeller is used.
90-883728 JULY 2001
-- Anti-Corrosion Grease
-- Special Lubricant 101
-- 2-4-C Marine Lubricant
-- Perfect Seal
a
Forward Thrust Hub
Propeller Shaft
Continuity Washer (If
Equipped)
WARNING
c
e
f
d
d - Rear Thrust Hub
e - Tab Washer
f - Propeller Nut
CAUTION
LEFT HAND NON-RATCHETING
d
51916
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