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GENERAL INSTRUCTIONS FOR MARINE ENGINE WINTERIZATION
(Using Camco propylene glycol antifreeze) engine grade.
1. Install flushette unit (not included) to lower drive unit.
(Cups need to be lubricated with water before being installed on lower unit)
a. Standard flusher fits most engines
1. Place flusher unit over water intake ports on drive unit.
b. Volvo uses smaller flusher unit.
1. Place flusher unit (small unit) over water intake ports on drive unit.
2. Attach tension strap hooks (small end) to rubber tension drop.
3. Attach tension strap hook to wire portion of motor flusher unit.
Pull tension strap around lower unit and hook
other hook to opposite side of flusher unit. Tension strap
is adjustable to allow for proper tension needed to keep flusher unit in place.
c. Some OMC's do not use flusher unit, but use adapter mounted to pivot cap
(available from OMC). These units use a straight garden hose connection.
d. On straight inboards. refer to owners manual for proper procedures.
e. With twin engine installation, only do one engine at a time, then repeat
process.
(Do not run both
engines at the same time.)
For front engine mounted raw
water pumps (including most Volvos and inboards) a Front Engine Pump Adapter is required
to connect directly to the suction side of the row water pump. Use Camco #65493 Front
Engine Pump Adapter.
CAUTION: BEFORE CONTINUING PROCEDURE. REMOVE PROPELLER(S) TO MINIMIZE THE
RISK OF PERSONAL INJURY. IF REMOVING PROPELLER(S) IS NOT POSSIBLE. MAKE SURE PROPELLER(S)
HAS ADEQUATE TURNING ROOM. A SPINNING PROPELLER CAN CAUSE SEVERE BODILY INJURY BY DIRECT
CONTACT WITH PERSONS OR LOOSE OBJECTS IT MAY CATCH AND PROJECT.
2. Connect garden hose to water supply and to engine flusher. Turn water supply on
(never use full tap water pressure, as full water pressure can damage seals.)
3. Make sure lower unit is down in normal operating position with gear shift in NEUTRAL
position. Start engine.
NOTE: Make sure water is being discharged from
exhaust water ports, if not, SHUT ENGINE DOWN IMMEDIATELY and remedy problem. Check all
garden hose connections to insure proper water flow if all connections are secure and
clear hose is not kinked, refer to owners manual.
(Never leave boat unattended while flushing/winterizing).
4. Let engine run at idle speed (never to exceed 600-850 rpm - consult your owners manual
for idle speed of your particular engine). Let engine run for 3-5 minutes or until
engine has reached normal operating temperature.
5. Shut engine down.
6. Cut off water supply and disconnect garden hose.
7. Your engine is now flushed with fresh water and you are now ready to start winterizing
procedures.
Steps 1 - 7 apply to all Inboard-Outboard raw water cooled engines
(For fresh water cooled engines. flushing time con be reduced to 2-3 minutes).
8. Raw water cooled engines:
a. Drain exhaust
manifolds, elbows, elbow risers.
b. Drain engine block
c. Drain water pump
d. Drain power steering oil cooler, if so equipped.
e. Drain all hoses, housings, etc.
f. With in-line engines, tilt engine so aft end is lower then front end for proper
draining, as all in-line engines drain to rear. (This can be done either by using
trailer jack or if equipped with power trim on the engine, by adjusting trim unit.)
g. With V6 and V-8 engines, engine should be level, as all V-6 & V-8 engines drain
from center of engine (Follow above instructions in step (f) to adjust engine
alignment.)
NOTE: Refer to Owners manual for correct
procedures on draining for winter storage.
9. Fresh water cooled engines (Raw water part)
a. Drain sea water pumps & hoses.
b. Drain raw water port of heat exchangers.
c. Drain any power steering and transmission oil coolers, that are raw water
cooled.
d. Drain exhaust manifolds (raw water section (S)).
NOTE: Refer to Owners Manual for correct
procedures on draining for winter storage.
10. After all water is drained from system, reconnect all hoses, replace all drain plugs,
close all drain valves.
NOTE: It is recommended to coat threads on all plugs with on anti-seize
compound.
11. Select the CAMCO antifreeze compound with the degree of freeze/corrosion resistance
you wish to obtain. This can be verified by a Camco Refractometer (stock #65401)
available from your Marine dealer or distributor.
12. Make sure bucket on the
Camco Antifreeze Pumping System is filled with antifreeze, then follow these steps.
a. Connect hose from pump to flusher unit.
b. With a 12 volt pumping system: connect battery leads from pump to battery
(Red to positive (+) and block to negative (-)). Pump will start immediately. Make
sure pump has started pumping antifreeze, then quickly go to step 13.
Note: With 120 Volt pumping system: plug pump
into on approved ground fault circuit and refer to manufacturers General Safety
information included with pump.
13. With gear shift in Neutral and lower unit in normal operating position start engine.
Let engine run at idle speed until you have continuous color discharge from exhaust
ports.
Then shut engine off.
14. Using Refractometer, test a few drops of the color discharge. THIS IS A MEASURE OF
YOUR ACTUAL ENGINE FREEZE PROTECTION LEVEL. If necessary. start engine again
and test color discharge until you obtain some reading as in #11 above. Repeat
if necessary. When discharge test is same as that in the bucket, this indicates that
engine is thoroughly filled with protection level you selected.
15. Shut pump off. Disconnect hose from pumping system. Remove flusher unit. Store
equipment for next winterization.
NOTE: Do not crank or start boat engine after
winterizing as this will discharge antifreeze.
a. Always store lower unit in normal operating position. If not stored in this position
some models may collect and hold water in lower unit housing, which can result in freezing
and bursting a lower unit housing.
b. Draining and flushing without adding antifreeze will cause rust in manifolds and
(Continued on page 142)
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