9.
Insert a small wire (repeatedly) to make sure that
speedometer pitot tube, trim tab cavity vent hole,
and trim tab cavity drain passage are unob-
structed and drained.
IMPORTANT: MerCruiser recommends that pro-
pylene glycol antifreeze (nontoxic and biode-
gradable, which makes it friendly to lakes and riv-
ers) be used in sea-water section of the cooling
system for cold weather or extended storage.
Make sure that the propylene glycol antifreeze
contains a rust inhibitor and is recommended for
use in marine engines. Be certain to follow the
propylene glycol manufacturer’s recommenda-
tions.
b
10.
For additional assurance against freezing and
rust, remove the thermostat cover and thermo-
stat. Fill the engine seawater cooling system with
a mixture of antifreeze and tap water mixed to
manufacturer’s recommendation to protect en-
gine to the lowest temperature to which it will be
exposed during cold weather or extended stor-
age.Usinganewgasket,reinstallthermostatand
cover. Tighten cover bolts to 30 lb. ft. (41 N·m).
a
c
NOTE: Hoses shown removed only to indicate flow.
Do not remove hoses.
71217
a
b
c
Typical Bravo Drive Unit
a - Speedometer Pitot Tube
b - Trim Tab Cavity Vent Hole
c - Trim Tab Cavity Drain Passage
d
f
a. Crank engine over slightly with starter motor
to purge any water trapped in seawater pick-
up pump. DO NOT ALLOW ENGINE TO
START.
e
g
b. After cooling system has been drained com-
pletely, coat threads of drain plugs with
Quicksilver Perfect Seal. Install all drain
plugs and tighten securely. Reconnect all
hoses and tighten all hose clamps securely.
72589
a - Cover
b - Gasket
c - Spacer
d - Thermostat
e - O-Ring
f - Housing
g - Fill Here
Index
90-823224--2 796
MAINTENANCE - 1B-25
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.5 out of 5)
Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
Could not find a copy until a search brought me here.
Excellent print.
Thank you