20 April 2004 / WHISPER 3,5 / USA
4.2.4 Replacing fuel filter
Filter change depends on contamination of the fuel, but
should be done however, at least every 300 running
hours. Before changing the filter, clamp off the supply
line. Remove the hoses from filter and attach them on the
new filter again. The arrow on the filter housing indicates
the direction of the flow. A clogged filter results in a lack
of output of the generating set.
4.2.5 Cleaning oil strainer
The oil strainer is behind a plug on the bottom of the en-
gine. In the strainer is a magnet to catch the metal parts
which are in the lubricating oil. Once per 1000 hours or
when the oil is contaminated one can clean the strainer
by washing it with petrol or a solvent. A green rubber plug
in the capsule gives access to the strainer. Before taking
out the plug one should sump the oil. Use tissues to
avoid spilling oil in the capsule.
4.3 REGULAR MAINTENANCE
CHECK DAILY:
• Oil level (see fig. 13)
Take care the oil level is never below the mark.
• Hoses for loose connections or deterioration.
•Water inlet filter.
AFTER FIRST 25 HOURS:
• Change oil.
Have the engine run until it is on temperature and
stop it. Drain oil by the sump pump into a suitable
retainer and fill up with fresh oil. Start the engine
again and have it run for 5 minutes. Stop the engi-
ne again and pause for a few minutes to let the oil
gather in the crankcase. Check the level again
and add oil when necessary.
• Check and tighten nuts, bolts, and unions, paying
particular attention to the fuel system.
• Check the valve clearance.
• Observe the exhaust at the normal full load. The
exhaust must be free from soot. Do not allow the
engine to run with a dirty exhaust without investi-
gating the cause as this may result in an expensi-
ve breakdown.
•Check the air vent on a regular basis.
When the air vent is not working properly the en-
gine can fill up with water by siphoning. Water in
the combustion chamber causes serious damage
to the engine.
EVERY 100 HOURS:
• Change oil.
• Check the battery acid level.
• Check battery terminals for corrosion
• Check impeller raw water pump (durability de-
pends on the purity of the sea water. In sandy wa-
ter and warm water wear will increase). When re-
placing the impeller the gasket between the pump
case and the cover should be replaced as well.
So when ordering a spare impeller order a gasket
as well. (50209011 impellor + gasket)
Remove the cover to get access to the impeller.
Remove the old impeller with the help of two
screwdrivers. Install the new impeller and add
some grease. Turn the blades in the direction of
rotation of the pump i.e. anti clockwise looking at
the impeller.
EVERY 300 HOURS:
• Replace the impeller of the raw water pump.
•Check valve clearance.
• replace the fuel filter
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