30
4.3.12 Changing oil certifugal filtration spool (if equipped)
Oil centrifugal filtration must be replaced with the replacement of oil and oil filter if the engine is equipped with it.
4.3.13 Changing fuel filter
(1) Clean the outside surface of the fuel filter. Remove the filter with tool and scrap it.
(2) Clean the filter head and its sealing surface. There should be no old O-ring left.
(4) Turn the filter by hand until the O-ring touches the sealed surface of the filter head, and further tighten it to
38-42 N·m with tool.
4.3.14 Changing primary fuel filter
The primary fuel filter is also spin-on type. Refer to “Changing fuel filter” for the procedure.
4.3.15 Priming fuel system
I If the engine is first put into use, or after being overhauled, or has been out of use for a long time, or fuel filter
(1) Shut down the engine and make sure the oil centrifugal
filtration completely stops operation before replacement.
(2) Wait until the engine cools down without hot felt with
hand. Loosen two locking bolts below the cover with tool
and remove the cover.
Caution: Check the O ring and replace it if damaged.
(1) Raise the spool along the axial of the filtration and drain
the oil in it. Remove the spool along the axial. Be sure not
to damage its bearing.
(2) Install a new spool and check it for free spin.
(3) Install the O ring and the cover. Tighten the bolts.
(4) Start the engine and let the oil centrifuge filtration
operate. Check the all joints for leakage.
Spool
(3) Before installing a new fuel filter, fill it with clean fuel
from 8 peripheral holes. The fuel level should be 3-15 mm
below the threaded hole. Apply a light film of clean engine
to the O-ring on the new fuel filter to form a lubricant film.
Caution: Do not add fuel from the central hole of the
filter.
Cove
Bolt
To Next Page
Loading...