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16 – English
MAINTENANCE
Maintenance
Cooling system
The machine is equipped with an efficient fan to cool the
motor. Cooling air which is drawn in through the grille by the
machines rear handle passes over the stator and rotor and
out through the front of the motor housing.
In order for the machine to always be cooled sufficiently the
cooling air openings must be kept clear and clean. Blow down
the machine regularly with compressed air.
Electrical Feed
Check that the cord and extension cord are intact and in good
condition. Never use the machine if the cord is damaged,
hand it in to an authorized service workshop for repair.
Replacing the carbon brushes
Check the carbon brushes at least once a month. The carbon
brushes should be replaced with new brushes if they are
worn, cracked or in any other way deformed.
All carbon brushes must be replaced when the brushes are
replaced.
• Remove both inspection covers by loosening both screws.
• Unscrew the cable holding the carbon brush. Now lift up
the spring and then lift out the carbon brush from the
brush retainer.
• Clean the brush retainers with a dry brush.
• Carefully blow away the dust.
• Fit the new carbon brushes and, at the same time, check
that they slide easily in the brush retainers.
• Fold down the springs and tighten the cable.
• New carbon brushes must be run in for approximately 40
minutes while idling.
Bevel gear
The grease in the gear housing should be changed every 4
months. Use high quality gear grease
The gear housing must not be filled completely with grease.
The grease expands as the machine heats up during
operation. If the gear housing was completely filled with
grease it could damage the seals and lead to leakage of
grease.
The gear housing should contain 90 g of grease in total.
!
WARNING! Inspection and/or maintenance
should be carried out with the motor
switched off and the plug disconnected.
!
WARNING! Never use damaged cables. They
can cause serious, even fatal, personal
injuries.