Yanmar 1GM10 Operation Manual page 60

PERIODIC MAINTENANCE
Draining the Fuel Filter / Water
Separator
WARNING
When removing any fuel system
component to perform maintenance
(such as changing the fuel filter), put an
approved container under the opening
to catch the fuel. Never use a shop rag
to catch the fuel. Vapors from the rag
are flammable and explosive. Wipe up
any spills immediately. Wear eye
protection. The fuel system is under
pressure and fuel could spray out when
removing any fuel system component.
1. Close the fuel cock.
2. Put a pan under the fuel / water
separator.
3. Remove the fuel filter cover and drain
any water and dirt collected inside.
4. Reassemble the fuel filter.
5. Purge air from the fuel system. See Air
Bleeding from the Fuel System After
Starting Failure on page 41.
54
Changing the Engine Oil
The engine oil in a new engine becomes
contaminated from the initial break-in of
internal parts. It is very important that the
initial oil replacement is performed as
scheduled. This includes the replacement
of the oil filter at this time.
WARNING
If you must drain the engine oil while it
is still hot, stay clear of the hot engine
oil to avoid being burned. Always wear
eye protection.
1. Turn the engine OFF.
2. Remove the engine oil dipstick. Attach
the oil drain pump (if equipped) and
pump out the oil. For easier draining,
remove the engine oil fill cap.
Prevent dirt and debris from
contaminating engine oil. Carefully
clean the dipstick and the surrounding
area before you remove the dipstick.
3. Fill with new engine oil. See Adding
Engine Oil on page 31.
Never mix different types of engine oil.
This may adversely affect the lubricating
properties of the engine oil. Never
overfill. Overfilling may result in white
exhaust smoke, engine overspeed or
internal damage.
4. Perform a trial run and check for oil leaks.
GM Series Operation Manual