USA / WHISPER 20 ULTRA / April 2004
21
A smeer of oil has to be put on the seal of the filter before
fitting the filter. The filter should be fastened manually:
when the rubber touches the metal turn 3/4 further.
4.2.6
Readjustment V-belt
The alternator bracket allows to readjust the V-belt. De-
flections should be 10 mm (refer to fig. 14).
4.3
REGULAR MAINTENANCE
CHECK DAILY:
•
Oil level (see fig. 15)
Take care the oil level is never
below the mark. Do not add oil
when the level is still above the
mark.
CHECK DAILY:
•
Level cooling liquid.
•
Hoses for loose connections or deterioration.
•
Water inlet filter.
AFTER FIRST 50 HOURS:
•
Change oil and replace the oil filter.
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.
•
Retighten the cylinder head bolts and adjust the
valve clearance. (Refer to paragraph 5.4.2)
•
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 regularly basis.
When the air vent it not working properly the en-
gine can fill up with water by siphoning. Water in
the combustion chamber causes serious damage
to the engine.
•
Check and readjust V-belt.
EVERY 100 HOURS:
•
Change oil.
•
Check the battery acid level.
•
Check battery terminals for corrosion
•
Check and readjust V-belt.
•
Check impeller raw water pump (durability de-
pends on the purity of the sea water. In sandy wa-
ter and warm water wear out will increase).
When replacing 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. Remove the cover to get access to the impeller. Re-
move 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.
10 mm
Fig. 14.
1
2
1
Max. oil level;
2
Min. oil level.
Fig. 13.
Fig. 15.
MAINTENANCE
