Mercury MerCruiser GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23

SERVICE MANUAL NUMBER 23
MAINTENANCE
IMPORTANT: To prevent threads in manifolds, elbows and cylinder blocks from rust-
ing out during storage, reinstall  plugs using Quicksilver Perfect Seal (92-34227--1)
on threads. Never leave drain plugs out during storage.
CAUTION
Sterndrive unit should be  stored in full “down” position.  Universal Joint bellows
may develop a “set”  if unit is stored in  raised position and may fail  when unit is
returned to service.
NOTE: If possible, place a container under drains and hoses to prevent water from draining
into boat.
CAUTION
If engine is equipped with Closed Cooling System, Closed Cooling section must be
kept filled with a solution of ethylene glycol antifreeze and water (mix antifreeze to
manufacturer’s recommended proportions to protect engine to lowest temperature
towhichitwillbeexposed).DONOTUSEPROPYLENEGLYCOLantifreezeinclosed
cooling  section. Seawater  section,  however,  must  be drained  completely.  See
“Fluid Recommendations” toward the front of this manual for more information.
CAUTION
A discharged battery can be damaged by freezing.
Power Package Layup
NOTICE
Refer to “Cold Weather or Extended Storage,” “Precautions,” in this section,
BEFORE proceeding.
IMPORTANT: MerCruiser strongly recommends that this service be performed by an
Authorized MerCruiser Dealer. Damage  caused by freezing IS NOT  covered by the
MerCruiser Limited Warranty.
1.
Fill fuel tank(s) with fresh gasoline that does not contain alcohol and a sufficient amount
of Quicksilver Gasoline Stabilizer for Marine Engines to treat gasoline. Follow instruc-
tions on container.
2.
If boat is to be placed in storage with fuel containing alcohol in fuel tanks (if fuel
without alcohol is not available): Fuel tanks should be drained as low as possible and
Quicksilver Gasoline Stabilizer for Marine Engines added to any fuel remaining in the
tank. Refer to “Fuel Requirements” for additional information.
NOTE: If desired, a portable fuel tank can be used to perform the remainder of the power
package layup procedures. Be sure to add an appropriate amount of Gasoline Stabilizer to
the portable tank.
3.
Run engine sufficiently to bring it up to normal operating temperature and allow fuel with
Quicksilver Gasoline Stabilizer to circulate through fuel system. Shut off engine.
4.
5.
Change oil and oil filter.
Flush cooling system. Refer to “Flushing Cooling System” procedure shown earlier in
this section.
6.
Close the fuel shut-off valve, if equipped. If no fuel shut off valve is present, a suitable
method must be  employed to STOP the flow  of fuel from the  fuel tank to the engine
before proceeding.
Index
90-861326--1
MARCH 1999
Page 1B-45
Product Specification
CategoriesMercury MerCruiser Manuals
Tags,
Model Year1998, 1999, 2000, 2001
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Mercury MerCruiser GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23 SKU UPC Model
Matt on Apr 08, 2015.

Just need the manual. Wrote review. Can't technically review what I haven't seen yet...


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