Layup - Mercury MCM Series Important Information Manual

IMPORTANT: Observe the following information
to ensure complete draining of cooling system.
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. Remove petcock, if neces-
sary, to insert wire completely into drain hole.
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.
! CAUTION
Stern drive 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 Sys-
tem, Closed Cooling section must be kept filled
with a solution of ethylene glycol antifreeze and
water (mix antifreeze to manufacturer's recom-
mended proportions to protect engine to lowest
temperature to which it will be exposed). DO NOT
USE PROPYLENE GLYCOL antifreeze in closed
cooling section. Seawater section, however,
must be drained completely.
! CAUTION
A discharged battery can be damaged by freez-
ing.
Index
1B-20 - MAINTENANCE

Layup

NOTICE
Refer to "Cold Weather or Extended Storage,"
"Precautions," in this section, BEFORE proceed-
ing.
1. Fill fuel tank(s) with fresh gasoline that does not
contain alcohol and a sufficient amount of Quick-
silver Gasoline Stabilizer and Conditioner to treat
the gasoline.
IMPORTANT: If boat is to be placed in storage
(with fuel containing alcohol in fuel tanks), car-
buretors or vapor separator tanks must be run
dry at idle RPM. Fuel tanks should be drained
completely and Quicksilver Gasoline Stabilizer
and Conditioner added to any fuel remaining in
the tank. Also, refer to "Fuel Specifications," see
Table of Contents.
2. Replace all fuel filters
3. Start engine and check for fuel leaks.
4. Run engine sufficiently to heat it to normal operat-
ing temperature; shut off engine and change oil
and filter.
5. If boat has been operated in salty, polluted or min-
eral-laden waters, flush cooling system.
6. Prepare fuel system for extended storage as fol-
lows:
a. For engines with carburetors:
Remove flame arrestor assembly and restart
engine. While operating engine at fast idle
(1000-1500 RPM), fog internal surfaces of in-
duction system and combustion chambers by
squirting approximately 8 ounces (227
grams) of Quicksilver Storage Seal or SAE
20W engine oil into carburetor bores. Stall
engine by squirting last 2 ounces (57 grams)
of Storage Seal or oil rapidly into carburetor.
Turn ignition to OFF.
b. For fuel injected engines with VST:
! WARNING
Fuel injection system is pressurized. A special
procedure must be used to remove this pressure
before removing the plug from vapor separator
tank. DO NOT attempt to remove plug without
having pressure removed. Fuel could spray on
hot engine causing fire or explosion.
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