Jonsered FC 2255 - Manual (Page 31)

MAINTENANCE
English – 31
Cleaning the air filter
Remove the air filter cover and take out the filter. Wash it
clean in warm, soapy water.
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.