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MAINTENANCE
20 – English
Cleaning
External cleaning
• Clean the machine daily by rinsing it with clean water
after the work is finished.
Cooling air intake
• Clean the cooling air intake when needed.
Spark plug
• If the machine is low on power, difficult to start or runs
poorly at idle speed: always check the spark plug first
before taking other steps.
• Ensure that the spark plug cap and ignition lead are
undamaged to avoid the risk of electric shoc
k.
• If the spark plug is dirty, clean it and at the same time
check that the electrode gap is 0.5 mm. Replace if
necessary.
These f
actors cause deposits on the spark plug
electrodes, which may result in operating problems and
star
ting difficulties.
• An incorrect fuel mixture (too much or incorrect type
of oil).
• A dirty air filter.
Functional inspection
General inspection
• Check that nuts and screws are tight.
Cutting blades
Replacing the blades
The blades have integrated belt pulley halves and are to
be changed in pairs.
• Loosen the bar nuts one turn anticlockwise.
• Screw the belt adjuster a few turns anticlockwise.
• This will position the drive belt in a more favourable
position with regard to assembling the new blades.
The drive belt is not clamped so easily.
• Dismantle the old blades by loosening the centre nut.
• Check the drive belt for wear. See instructions under
the heading "Drive belt".
NO
TICE! A dirty or bloc
ked air intake results in the
machine o
verheating which causes damage to the
piston and cylinder.
NOTICE! Always use the recommended spark plug
type! Use of the wrong spark plug can damage the
piston/cylinder.
!
CAUTION! You must replace the screw
kit when you replace the blade.
• Place the blades on each side of the bar. Insert the
steering pins of the nut through the blades and the
bolt washer.
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