Crankcase Oil Change - Marine Power 4.3 VORTEC MPI Owner's Manual

10.
Engine Maintenance
This manual provides basic information on routine
maintenance of Marine Power Engines. Whether the
reader is an experienced marine mechanic or a first
time boat owner, we strongly suggest you thorough-
ly read these procedures BEFORE you attempt any
procedure. Make sure you are familiar with the tools
suggested and the methods recommended. Safety
is our first concern. If repair required is beyond your
expertise, please contact your dealer or other qualified
technician. This manual contains guidelines to convey a
particular level of risk:
DANGER
DANGER
Hazards that will result in severe injury or death.
WARNING
WARNING
Hazards that could result in severe injury or death.
Caution: Hazards which could result in minor injury
or property damage.
CAUTION
Please be careful.
CAUTION
26
Electrical, ignition and fuel system components on
Marine Power Engines comply with U.S. Coast Guard
(USCG) Rules and Regulations to minimize risks of
fire and explosion. Use of replacement electrical,
ignition and fuel components which do not comply
with these rules and regulations could result in a fire
or explosion and must be avoided. The electrical and
ignition system is capable of violent electrical
shock. Always disconnect the battery cables when
performing any work where the cables could touch.
Take care to properly install and tighten all components
when servicing the electrical, ignition and fuel systems.
If the installation is not correct, sparks could ignite fuel
vapors from the fuel system.
If you are doing repair work around the intake or
exhaust openings, always protect those openings
against foreign matter entering the cylinders. Care
must be taken to use exact replacement parts.
Damage could result if mismatched. If a grade 5 hex
head bolt is removed, the same grade 5, hex head bolt
must be replaced. If you cannot re-use the same bolt, do
not improvise. Performance could be sacrificed
without original Marine Power parts or parts
recommended by Marine Power. A marine environment
is a tough one. Parts subjected to salt water can rapidly
corrode and engine failure could result. Warranty on
Marine Power Engines could also be affected if other
than recommended replacement parts are used.

Crankcase Oil Change

IMPORTANT! Start engine and operate until normal
temperature is reached. Warm oil flows more freely
carrying away more impurities. Remove the oil into a
suitable container. Marine Power equips their engines
with an E-Z oil drain hose. This hose can sometimes be
DANGER
routed through the hull drain fitting while the boat is on
its trailer. Draining can take several hours if the oil is
not warmed before draining. Some oil will remain in the
pan and engine. It is a small quantity but may make the
new oil appear used.
WARNING
The Federal Water Pollution Control Act prohibits
the discharge of oil or oily waste into or upon the
navigable waters and contiguous zone of the
CAUTION
United States, if such discharge causes a film upon,
or discoloration of, the surface of the water, or
causes an emulsion or sludge beneath the surface
of the water. Violators are subject to a penalty of
$5,000.00.
After replacing drained oil, start engine and run for
5 minutes to circulate oil throughout. Inspect entire
engine for leakage. Shut off engine and wait 5 minutes
for oil to drain back into pan. Check level with dipstick.
Add oil to proper level if needed.
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