26 – English
MAINTENANCE
Spark plug
The condition of the spark
plug is affected by:
• An incorrect carburettor
setting.
• An incorrect fuel
mixture (too much or
faulty oil).
• A dirty air filter.
These factors cause
deposits on the spark plug
electrode that may result in
malfunction or starting
difficulties.
If the machine is low on power, difficult to start or runs
poorly while idling always check the spark plug first.
If the spark plug is dirty, clean it and at the same time check
that the electrode gap is 0.5 mm. The spark plug should be
changed after about one month of operation or earlier if
necessary.
NOTE! Always use the recommended type of spark plug. An
incorrect spark plug can damage the cylinder/piston.
0,5 mm
!
WARNING!
Always discard a blade that is bent,
twisted, cracked, shattered or damaged in
any other way. Never attempt to straighten
a twisted blade for use again. Only use
original blades of the prescribed type.
• See the cutting
equipment’s packaging
for correct filing
instructions.
• The blades are sharpened
using a single cut flat file.
• Sharpen all edges equally
to maintain the balance
of the blade.
WARNING!
Always stop the engine before you start
work on any part of the blade. The blade
continues to rotate even after the throttle
has been released. Ensure that the blade
has stopped completely and remove the
cable from the spark plug before you start
to work with it.
!
Filing the grass blade
Sharpening the clearing blade
!
WARNING!
Incorrect cutting equipment or an
incorrectly sharpened blade increases
the risk of kickback.
• See the cutting
equipment’s packaging
for correct filing
instructions.
• A correctly sharpened
blade is a prerequisite for
working efficiently and to
avoid unnecessary wear to
the blade and clearing
saw.
• Make sure that the blade
is well supported when
you use the file. Use a 5.5
mm round file with a file
holder.
• The sharpening angle is
15°. Every other tooth is
sharpened to the right
and the intermediate
tooth to the left. When
the blade has been heavily
pitted by stones the upper
side of the teeth can, in
exceptional cases, need to
be dressed using a flat file.
In such cases this takes
place before sharpening
with the round file.
Dressing the top side
must be carried out
equally for all teeth.
• Adjust the setting. This
should be 1 mm.
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