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Every 20 hours of operation
5.1.2) Fuel filter cleaning (See Fig. 7)
– Pick the grommet out of the fuel tank, then remove the fuel filter assembly from the fuel tank
together with the grommet and the fuel tube to prevent dust entering into the fuel filter.
– Clean the fuel filter assembly in a bath of high flash-point solvent.
– Dry the fuel filter assembly before reassembly.
Improper use of solvents can results in fire or explosion.
5.1.3) Air filter cleaning (See Fig. 8)
– With a screwdriver, remove the two screws holding the filter to the carburretor.
– Open the two halves of the casing and remove the filter element.
– Wash the filter element in detergent and water and dry it thoroughly.
– Reassemble all parts.
Operating in dusty conditions may require more frequent maintenance.
Do not operate the engine with air filter removed.
Every 50 hours of operation
5.1.4) Spark plug cleaning (See Fig. 9)
– Disconnect the spark plug wire lead then with a spark plug key, remove the spark plug.
– Clean the electrode, taking care not to damage the insulation.
– Check and adjust, if necessary, the electrode gap. (0.6 mm - 0.7 mm).
– Install and tighten the spark plug to 14 Nm, then connect the spark plug lead.
– In case of plug replacement, use type NGK BPMR8Y.
5.1.5) Checking screws
Check and re-tighten all screws where necessary.
5.2) Special maintenance of the machine
Special maintenance operations require the intervention of qualified personnel only, please
contact CEMBRE (see § 10).
5.3) Storing of the machine for long periods
– Completely empty the fuel tank.
– Start the engine and let it run until it stops, so that all fuel is exhausted from the machine.
– Remove the spark plug.
– Pour 3-5 cm
of oil into the cylinder.
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– Repeatedly pull gently on the starting rope to ahieve dispersion of the oil in the cylinder,
then reinstall the spark plug.
– With a clean cloth wetted with motor oil, wipe all metal parts of the machine. Store the
machine in its appropriate case or in a dry environment protecting it against accidental
damage and dust.
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