（
2
）
Replacing Marine gear Lube Oil and
Cleaning the Filter (Ist time)
During initial operation of the engine, the lube oil
is contaminated quickly due to initial wear. The
lube oil must be replaced early. Clean the clutch
Iube oil filter, too, at this time.
①
Remove the filler port cover, insert the drain
oil pump hose to the bottom of the marine
gear and pump out the lube oil from inside the
marine gear.
②
Remove the filter in the side cover, extract the
filter and clean the filter with kerosene.
③
When installing the filter, attach the side cover
by pressing it by coil spring.
Do not forget to place the O-ring inside the
side cover.
④
Supply new lube oil to the specified level.
(See 3. 2. 3.)
⑤
Trially operate the engine and check that no oil leaks.
4.3.2
Inspection Every 50 Hours
（
1
）
Draining of the Fuel Tank (Hull) (local supply)
Open the drain cock of the fuel tank to extract drain (water, dust, etc.) from the tank s bottom.
Receive the drain in a container. Drain until fuel with no water and dust flows out. Then close
the drain cock.
（
2
）
Draining of the Oil / Water Separator
(optional)
①
Close the fuel cock.
②
Remove the drain plug at the bottom of the
oil/water separator and drain water and dust
from inside.
③
After draining of the oil / water separator, be
sure to vent air from the fuel system.
(See 3. 3. 2 (3))
_
37
_
Lube oil cooler
Lube oil filter (inside)
(KMH6A, KMH6A1)
Marine gear (YAnmar
model: KMH6A)
Drain oil pump (Optional)
( )
Drain plug
[Fig.20]
