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MAINTENANCE
Cleaning the air filter
Remove the air filter cover and take out the filter. Wash it
clean in warm, soapy water.
An oiled foam plastic filter (available as an accessory) must
be used if the machine is operated in extremely dusty
conditions. See instructions under the heading Oiling the air
filter.
Oiling the air filter
Always use special filter oil. Filter oil contains a solvent to
make it spread evenly through the filter. You should therefore
avoid skin contact.
Put the filter in a plastic bag and pour the filter oil over it.
Knead the plastic bag to distribute the oil. Squeeze the
excess oil out of the filter inside the plastic bag and pour off
the excess before fitting the filter to the machine. Never use
common engine oil. This would drain through the filter quite
quickly and collect in the bottom.
An air filter that has been in use for a long time cannot be
cleaned completely. The filter must therefore be replaced with
a new one at regular intervals. A damaged air filter must
always be replaced.
Bevel gear
The bevel gear is filled with the right amount of grease at the
factory. However, before using the machine you should check
that the bevel gear is filled 3/4 full with grease. Use
JONSERED special grease.
The grease in the bevel gear does not normally need to be
changed except if repairs are carried out.
Drive shaft
The drive shaft must be greased every three months during
full-time use. Contact your dealer if you are uncertain about
the procedure.
Spark plug
The spark plug condition is influenced by:
• Incorrect carburetor adjustment.
• An incorrect fuel mixture (too much or incorrect type of
oil).
• A dirty air filter.
These factors cause deposits on the spark plug electrodes,
which may result in operating problems and starting
difficulties.
If the machine is low on power, difficult to start or runs poorly
at idle speed: always check the spark plug first before taking
any further action. If the spark plug is dirty, clean it and check
that the electrode gap is 0.020 inch (0.5 mm). The spark plug
should be replaced after about a month in operation or earlier
if necessary.
CAUTION! Always use the recommended spark plug type!
Use of the wrong spark plug can damage the piston/cylinder.
Check that the spark plug is fitted with a suppressor.