Maintaining Closed Cooling
Coolant Level
Flushing Cooling System
If engine is operated in salty, polluted, or mineral-lad-
en water, flush cooling system (preferably after each
use) to reduce corrosion and prevent the accumula-
tion of deposits in the system. Thoroughly flush cool-
ing system prior to storage.
!
WARNING
Allow engine to cool down before removing pres-
sure cap. Sudden loss of pressure could cause
hot coolant to boil and discharge violently. After
engine has cooled, turn cap 1/4 turn to allow any
pressure to escape slowly, then push down and
turn cap all the way off.
MCM (Stern Drive)
BOAT OUT OF WATER
1.
Coolant level in heat exchanger should be full (to
bottom of filler neck).
1. Install flushing attachment over water pickup
holes in gear housing as shown.
IMPORTANT: When reinstalling pressure cap, be
sure to tighten it until it contacts stop on filler
neck.
2. Attach a garden hose between the flushing at-
tachment and a water tap.
2.
Coolant level should be between the ADD and
FULL marks on coolant recovery reservoir with
the engine at normal operating temperature.
a
a
b
72693
a - Flushing Attachment
b - Hose
!
WARNING
72520
When flushing, be certain the area around pro-
peller is clear, and no one is standing nearby. To
avoid possible injury, remove propeller.
a - Coolant Recovery Reservoir
!
CAUTION
Do not run engine above 1500 RPM when flush-
ing. Suction created by seawater pickup pump
may collapse flushing hose, causing engine to
overheat.
Index
90-823224--2 796
MAINTENANCE - 1B-13
| 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