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Husqvarna LB553Se Manual

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MAINTENANCE
16 – English
• Adjust the belt by moving the ball-bearing up or down.
• A new belt stretches and becomes longer, so adjust
the belt again after a few hours of operation.
• Screw on the belt cover and test run the machine.
Replacing and adjusting the centre belt
The centre belt runs between the engine shaft and the
gearbox.
• Remove the cutter. (only when replacing belt)
• Unscrew the adjuster screws a few turns.
• Replace the belt with a new one and tighten the
adjustment screws a little. (only when replacing belt)
• Adjust the belt by moving the gear forwards or
backwards.
• The belt should be stretched so that it can move 6-
10mm in the centre. That corresponds to a pull of
approx. 3 kg. Use a fishing scale to check.
• Tighten the adjustment screws properly. (3 Nm)
• Check the drive operation, as adjustment of the gear
affects the belt tension in the gearbox.
Cleaning
Do not use a high pressure washer to clean the machine.
Never flush water directly on the engine.
When cleaning under the cutting deck, turn the machine
with the spark plug upwards. Empty the fuel tank.
Trouble shooting
If the engine does not start, check the following:
• Replace the fuel with new, clean fuel.
• Check that the fuel valve is open.
• Check that the engine brake works correctly and is
undamaged.
• Clean the spark plug. Check that the electrode gap is
0.7-0.8 mm.
• Check the airfilter and clean it when it´s necessary.
• If the engine does not start after taking these actions,
contact the nearest authorised service agent.
• If the cutting result is not satisfactory and the grass
straws are fuzzy on the cut face, replace the cutter.
Below you will find some general maintenance
instructions.
Daily maintenance
1 Check that the engine brake handle works safely.
2 Brush leaves, grass and the like off of the lawn mower.
3 Clean the air intake on the starter. Check the starter
and starter cord.
4 Check the oil level.
5 Clean the air filter. Replace if necessary.
6 Check that nuts and screws are tight.
7 Check the cutting attachment. Never use blades that
are dull, cracked or damaged.
Weekly maintenance
1 Clean the spark plug. Check that the electrode gap is
0.7-0.8 mm.
2 Clean the cooling fins on the cylinder.
Monthly maintenance
1 Check that drive belt is not damaged and is not visibly
defective.
2 Clean the gearbox.
3 Check the fuel filter and the fuel hose. Replace if
necessary.
4 Clean the inside of the fuel tank.
5 Lubricate the drive control.
6 Change the engine oil.
7 Inspect the clutch wire. See instructions under the
heading Assembly.
… 16 …


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