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RCJ-7Y
20
MAINTENANCE
WARNING: Never test the ignition system with ignition
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wire connector removed from spark plug or with
unseated spark plug, since uncontained sparking
may cause a fire. A loose connection between spark
plug terminal and ignition wire connector in the boot
may create arcing that could ignite combustible
fumes and cause a fire.
Use only resistor type spark plugs of the approved range.
Factors such as:
- too much oil in fuel mix;
- dirty air filter;
- unfavourable running conditions, e.g. operating at part load;
may result in rapid deterioration of the spark plug.
Spark Arresting Muffler
The blower is provided with a Spark Arrester System p.n.
56560020BR (Fig. 50) complying with the requirements of SAE
J335 standard; you can check the p.n. of the Spark Arrester
System on the muffler itself.
WARNING – This muffler incorporates a catalytic
converter, needed in order to ensure the engine
complies with current emissions standards. Never
attempt to modify or remove the catalytic converter:
in doing so, you will be breaking the law.
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WARNING – Mufflers with catalytic converters become
very hot during operation, and retain heat for a long
time after the engine has been stopped. This is the
case even with the engine idling. Contact can burn
the skin. Always remember the potential fire risk!
CAUTION – If the catalytic converter is damaged, it
must be replaced. If the catalytic converter frequently
becomes blocked, this could be an indication that the
efficiency of the muffler is limited.
Spark arrester screen
As the spark arrester screen (D, Fig.50) can become dirty during
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normal use, it should be inspected weekly and cleaned as
required. In particular:
- check the spark arrester screen periodically, and replace it if
holed, bent or buckled;
- check carefully for any dust, debris or organic material that may
be in contact with parts of the spark arrester system; clean
regularly using tools or compressed air.
Cleaning:
• Allow the muffler to cool.
• Remove the two screws (A, Fig.49) securing the deflector.
• Remove the deflector (B, Fig.50) , the gasket (C) and the spark
arrester screen (D).
• Clean and inspect the spark arrester screen.
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WARNING – Replace the spark arrester screen if
damaged, faulty or worn (p.n. 56550143R).
• Reassemble the components removed previously, in reverse
order, and tighten the screws (A, Fig.50) torquing to 0.36 kgm
(3.5 Nm).
WARNING – Do not use the blower if the muffler is
damaged or missing, or has been altered in any way.
Operating the machine with an improperly maintained
muffler will increase the risk of fire and hearing loss.
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