Cleaning; Functional Inspection - Husqvarna K 970 Operator's Manual

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.
NOTICE! A dirty or blocked air intake results in the machine
overheating which causes damage to the piston and
cylinder.
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 shock.
• 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.
NOTICE! Always use the recommended spark plug type!
Use of the wrong spark plug can damage the piston/
cylinder.
These factors cause deposits on the spark plug electrodes,
which may result in operating problems and starting
difficulties.
• An incorrect fuel mixture (too much or incorrect type of
oil).
• A dirty air filter.
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MAINTENANCE

Functional inspection

General inspection
• Check that nuts and screws are tight.
Carburetor
The carburettor is equipped with fixed needles to ensure the
machine always receives the correct mixture of fuel and air.
When the engine lacks power or accelerates poorly, do the
following:
• Check the air filter and replace if necessary. When this
does not help, contact an authorised service workshop.
Adjusting the idle speed
!
Start the engine and check the idling setting. If the carburettor
setting is correct, the diamond chain shall stand still at idle
speed.
• Adjust the idle speed using the T screw. Turn the idle
speed screw clockwise until the chain starts to rotate. Now
turn the screw anti-clockwise until the chain stops
rotating. A correctly adjusted idle speed is set when the
engine accelerates without hesitation.
Rec. idle speed: 2700 rpm
CAUTION! If the idle speed cannot be
adjusted so that the cutting attachment
stops, contact your dealer/service
workshop. Do not use the machine until it
has been correctly adjusted or repaired.
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