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4.3 Tasks and Methods of Engine Maintenance
4.3.1 Checking engine periphery
Check the periphery of the engine each time before starting:
xCheck if the engine is in clean state and free from useless things on it.
xCheck the joints and connections of the fuel system, cooling system and lubricating system for leakage.
xCheck if the fan and its guard are fastened in place.
xCheck the fastening condition of the accessories.
xCheck the electrical circuits and the wire for intact.
xCheck the drive belt for intact.
4.3.2 Checking fuel tank
Check the fuel level in the fuel tank daily.
4.3.3 Checking air filter service indicator
Caution: Do not start the engine without an air filter, and failure to do so would easily cause early engine
wear. Marine application is exceptional.
4.3.4 Checking first stage fuel filter service indicator
Check the service indicator daily. When the first stage fuel filte
contains a certain amount of foreign particulates and causes
difficulty for the fuel transfer pump to pump fuel, the indicator on
the filter appears in red, reminding you that the fuel filter must
be replaced. The filter must be replaced too even the indicato
does not appear red after being used for 250 hours. The filter is
a spin-on type one like the second stage fuel filter. Refer to
“Replacing fuel filter (second stage)” for the replacement
procedure.
First stage
fuel filter
Service indicator
Check the maintenance indicator of the air filter every day. If
the viewing window shows red piston, it represents that the
intake resistance of the air filter exceeds the specified value,
and the filter element requires to be replaced. Refer to Section
4.3.25 for the requirement and procedure of the replacement.
Press the button on the top of the service indicator for
reposition after the replacement.
Button
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