Cleaning The Air Filter; Replacing The Fuel Filter; Checking Coolant; Checking V-Belt Tension - Mase Marine IS 9000 Manual Uso Y Mantenimiento

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WARNING
Check the oil level using the dipstick provided [fig.
3, ref. 1 ]. The level must always be between the MAX
and MIN level indicators on the dipstick itself.
5.2 Changing the motor oil
The capacity of the motor oil sump is 4 US qt. Oil is
topped up and replaced through the hole [fig. 5, ref. 4].
To replace the oil in the motor sump, first remove the
dipstick [fig. 3, ref. 2], then operate the extractor pump
provided [fig. 5, ref. 8], after having removed the screw
that acts as a plug [fig. 5, ref. 5].
It is recommended that you change the oil when it is still
sufficiently warm, so that it flows better.
For the recommended oil types, see the table "A", pag.
2.
WARNING
The motor oil should be changed for the first time
after 50 working hours; the second and subsequent
oil changes are only necessary every 150 working
hours.
INFORMATION
For more detailed information on lubrication of the
motor, please consult the motor use and mainte-
nance manual enclosed with the generator group.
INFORMATION
Do not discard used oil, as it is a source of pollution.
Used oil should always be handed over to the spe-
cialised Collection Centres responsible for its dis-
posal.
To replace the oil filter cartridge, unscrew it from its
support using appropriate commercially available tools.
When replacing the new cartridge, ensure that the
rubber seal ring is lubricated.

5.3 Cleaning the air filter

IS 9000-9500 is fitted with a net air filter that prevents
foreign bodies from entering the combustion chamber.
To maintain this it is sufficient to clean the filter element
once a year to remove the impurities that have collected
in it.

5.4 Replacing the fuel filter

To guarantee long life and correct operation of the motor
it is extremely important that the fuel filter cartridge be
replaced at regular intervals, in accordance with the
times indicated by the manufacturer and set down in the
table in paragraph 5.11.
This operation is done by proceeding as follows:
- close the fuel tap [fig. 5, ref. 6];
- completely unscrew the support ring nut [fig. 5, ref. 7];
GB
- remove the old cartridge and replace it with a new one;
- to reassemble, repeat the above operations in reverse
order.
When the fuel filter cartridge has been replaced it is
necessary to bleed the supply system to remove all the
air bubbles that may have formed in it (see paragraph
3.2).
5.5 Checking the coolant
The level of the coolant liquid inside the closed cooling
circuit must be checked periodically. The reference
marks that are used to check the level are printed on the
expansion tank. Should the level be too low, insert more
coolant into the expansion tank, taking care that the level
does not exceed the maximum level mark.
DANGER
Never open the plug closing the expansion tank [fig.
7, ref. 1] and the heat exchanger [fig. 7, ref. 2] when
the motor is hot, as this might result in a dangerous
outflow of coolant.

5.6 Checking V-belt tension

A V-belt is used to transmit rotation from the engine shaft
pulley to that of the coolant pump and the sea water
pump.
If the tension in this belt is too high this will result in
excessive wear, while if the tension is too low the pulley
will idle and there will not be a sufficient circulation of
water and coolant.
Adjust the belt tension as follows:
loosen the regulation screw [fig. 8, ref. 1] and move the
sea water pump outwards to increase the tension, or
inwards to decrease it.
CAUTION
To prevent the belt from slipping, do not allow it to
become oily. Clean the belt with petroleum if it is
found to be oily when checked.
The belt tension is correct when it gives by approxi-
mately 0.4 in under a thrust of 11 lb. [fig. 8, ref. 2].
DANGER
Always keep your hands well away from the V-belt
and pulleys when the motor is working.

5.7 Emptying cooling system

To carry out maintenance operations on the air-water
heat exchanger or on the cooling system, the sea water
intake system must be emptied. This is done as follows:
- close the sea water inlet tap [fig. 4, ref. 2];
- open the special drainage tap [fig. 4, ref. 3] and allow
all the water to drain out;
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IS 9000 - 9500