Information About The Spark Plug - Solo 121 Instruction Manual

Operating and maintenance instructions

9.7 Information about the spark plug

Check the spark plug regularly after 50 hours of
operation.
• Remove the spark plug cover.
• Disconnect the spark plug cap.
• Unscrew the spark plug and dry the electrodes.
The spark plug should be replaced after 100 hours
of operation or if the electrodes are badly worn.
Do not turn the engine over while the spark plug
has been removed or the spark plug cap has been
disconnected from the high-tension ignition cable.
A spark may cause a fire!
Fig. 19
Spark plugs with resistor (thermal value 200) are
available in different brands under the following
description:
BOSCH WS6F
CHAMPION RCJ-6Y or comparable.
The correct electrode gap is 0.5 mm.
Only use spark plugs, where the contact nut has
been firmly fitted. Loose connectors may produce
sparks, which can cause a fire.
• Insert the spark plug into the cylinder head and
tighten it.
• Push the spark plug cap firmly over the spark
plug.
• Refit the spark plug cover.
Before restarting the engine, check the high-tension
ignition cable for any damage to its insulation and
ensure the cable is connected securely to the plug
cap.
ENGLISH 18
9.8 Replacing the fuel filter
We recommend having the fuel filter (32) changed
annually by a specialised service centre.
Fig. 20
A trained mechanic can carefully remove the fuel
filter via a wire loop through the fuel tank filler.
Ensure that the thicker part of the fuel hose on the
tank wall is not drawn into the fuel tank.
9.9 Shutdown and storage
Preferably, store the equipment in a dry and secure
place with a full fuel tank. Open flames or similar
must not be nearby. Prevent unauthorised use –
particularly by children.
For stops longer than four weeks the following
steps should be carried out:
• Empty and clean the fuel tank at a well-ventilated
location.
• Start the engine with an empty fuel tank. Run the
engine until the carburettor is empty and the
engine stalls. Otherwise the carburettor nozzles
could become encrusted with residual fuel
mixture and make a subsequent start harder.
• Clean the power tool well (particularly the air
intake openings, the cylinder fins, the air filter
and the fuel filler area).
• Preferably, store the equipment in a dry and
secure place with a full fuel tank. Open flames or
similar must not be nearby. Prevent unauthorised
access – particularly by children.