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2. Fins on the flywheel.
3. Cooling fins on the cylinder.
4. Cylinder cover (directs cool air over the cylinder).
5. Muffler cover.
6. Muffler plate.
4
2
3
1
6
5
To examine the spark plug
CAUTION: Always use the
recommended spark plug type. Incorrect
spark plug type can cause damage to the
product.
• Examine the spark plug if the engine is low on
power, is not easy to start or does not operate
correctly at idle speed.
• To decrease the risk of unwanted material on the
spark plug electrodes, obey these instructions:
a) Make sure that the idle speed is correctly
adjusted.
b) Make sure that the fuel mixture is correct.
c) Make sure that the air filter is clean.
• If the spark plug is dirty, clean it and make sure that
the electrode gap is correct, refer to
Technical data
on page 20
.
• Replace the spark plug if it is necessary.
Air filter
Remove dust and dirt from the air filter to keep it clean
and prevent these problems:
• Carburetor malfunctions.
• Problems when you start the product.
• Loss of engine power.
• Increased wear to engine parts.
• Too much fuel consumption.
To clean the air filter
CAUTION: A air filter that is damaged,
very dirty or soaked with fuel must always be
replaced.
If you use an air filter for a long time it cannot be fully
cleaned. Replace the air filter with a new one at regular
intervals.
1. Move the choke lever up, to close the choke valve.
2. Remove the air filter cover and remove the air filter.
3. Clean the air filter with warm soap water. Make sure
that the air filter is dry before you install it.
4. Replace the air filter if it is too dirty to fully clean it.
Always replace a damaged air filter.
5. Also clean the inner surface of the filter cover. Use
air or a brush.
6. Do a check of the rubber sealing surface. Replace
the filter on the rubber seal if it is damaged.
7. Make sure that the filter is dry before you assemble
it.
To lubricate the bevel gear
1. Remove the cutting equipment.
2. Put the product with the grease plug at its highest
position.
331 - 012 - 25.09.2023
17
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