MAINTENANCE
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.
Functional inspection
General inspection
•Check that nuts and screws are tight.
Drive belt
Check the tension of the drive belt
•For correct tensioning of the drive belt, the square nut should be positioned opposite the marking on the belt cover.
Tensioning the drive belt
•The tension of a new drive belt must be readjusted after one or two tanks of fuel have been used.
•When the machine is equipped with a friction retarder, a scraping sound can be heard from the bearing housing when the blade is turned by hand. This is quite normal. Please contact an accredited Husqvarna workshop if you have any questions.
•The drive belt is enclosed and well protected from dust and dirt.
•When the drive belt is to be tensioned, release the bolts holding the cutting arm.
•Screw the adjuster screw so that the square headed nut comes opposite the marking on the cover. This automatically ensures that the belt has the correct tension.
•Tighten both of the screws holding the cutting head using a combination spanner.
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