8.
Start engine and inspect for leaks.
IMPORTANT: Observe the following information
to ensure complete draining of cooling system.
a
•
•
Engine must be as level as possible.
A wire should be repeatedly inserted into all
drain holes to ensure there are no obstruc-
tions in passages.
b
c
IMPORTANT: To prevent threads in manifolds, el-
bows and cylinder blocks from rusting out dur-
ing storage, reinstall plugs using Quicksilver
Perfect Seal on threads. Never leave drain plugs
out during storage.
d
NOTE: If possible, place a container under drains
and hoses to prevent water from draining into boat.
e
71758
MCM (Stern Drive) Models
NOTICE
a - Housing
b - O-Ring
c - Thermostat (Stainless Steel)
d - Spacer
Referto“DrainingPrecautions,”inthissection,
BEFORE proceeding.
e - Gasket
1.
2.
Ensure engine is as level as possible to ensure
complete draining of cooling system.
Draining Seawater Cooling
System
Remove drain plugs (port and starboard) from
cylinder block.
Draining Precautions
!
CAUTION
If boat is in the water, seacock, if so equipped,
must remain closed until engine is to be restarted
to prevent water from flowing back into cooling
system and/or boat. If boat is not fitted with a
seacock, water inlet hose must be disconnected
and plugged to prevent water from flowing back
into
cooling
system
and/or
boat.
As
a
precautionary measure, attach a tag to the
ignition switch or steering wheel of the boat with
the warning that the seacock must be opened or
the water inlet hose reconnected prior to starting
the engine.
72609
a
Starboard Side Shown (Port Similar)
a - Drain Plug
NOTICE
3.
Repeatedly clean out drain holes using a stiff
piece of wire. Do this until entire system is
drained.
For cold weather or extended storage infor-
mation and procedures, refer to SECTION 1B.
NOTE: It may be necessary to lift, bend, or lower
hoses to allow water to drain completely when hoses
or drain plugs are disconnected.
Index
90-823324--2 796
SEAWATER COOLED SYSTEMS - 6A-41
| 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.
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