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MAINTENANCE
Maintenance
Air filter
The air filter must be regularly cleaned to remove dust and dirt
in order to avoid:
• Carburettor malfunctions
• Starting problems
• Loss of engine power
• Unnecessary wear to engine parts.
• Excessive fuel consumption.
Clean the air filter daily, or more often in demanding
conditions.
The air filter is dismantled once the air filter cover has been
lifted off. Press in the catches on the top of the air filter cover
and lower the cover.
Remove the air filter and check that it is undamaged. Replace
with a new air filter if you believe it to be defective.
Clean the filter by knocking the filter carefully against a hard
surface and blowing with compressed air from inside. Never
brush the dirt away. Replace the air filter if it is very dirty.
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.
When reassembling, make sure that the filter completely
seals against the filter holder.
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
any further action. If the spark plug is dirty, clean it and check
that the electrode gap is 0.7-0.8 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.
Muffler
The muffler is designed to reduce the noise level and to direct
the exhaust gases away from the operator. The exhaust
gases are hot and can contain sparks, which may cause fire
if directed against dry and combustible material.
Regularly check that the muffler is securely attached to the
machine.
Never use a machine that has a faulty muffler.
Cutter
It is important to have a sharp and correctly balanced cutter.
Loosen the bolt holding the cutter and leave the cutter at a
service workshop at least once a year for grinding and
balancing. An appropriate time to do this is after the mowing
season has finished.
If the cutter or cutter bracket need to be changed you must
replace the cutter bolt, washer and friction washer at the
same time.
The bolt should be tightened with a torque of 45-60 Nm when
you fit the cutter again. See instructions under the heading
Assembly.
!
WARNING! Make sure the cutting attachment
has stopped before cleaning, carrying out
repairs or an inspection. Disconnect the HT
lead from the spark plug.
!
WARNING! The muffler gets very hot in use
and remains so for a short time afterwards.
Do not touch the muffler if it is hot!
!
WARNING! Always wear heavy-duty gloves
when repairing the cutting attachment. The
blades are very sharp and can easily cause
cuts.