USA / WHISPER 15 ULTRA / May 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.
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