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Viking MA 443C Manual

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0478 131 9922 D - EN
52
Fault:
Motor does not start
Possible cause:
– Battery not fully charged (one green
LED flashes on battery)
– Battery incorrectly inserted
– Safety plug is not inserted
– ON button not pressed
– Motor is overloaded because the grass
is too tall or too wet
– Motor overload protection activated
– Battery too cold or too warm (one red
LED illuminates on battery)
– Lawn mower too warm (three red LEDs
illuminate on battery)
– Humidity in machine and/or battery
– Mower housing is blocked
– Fuse in safety plug defective
– Machine defective (three red LEDs
flash on battery)
Remedy:
– Charge battery (Ö 8.4)
– Insert battery into battery compartment
(Ö 8.3)
– Insert safety plug (Ö 9.1)
– Press the ON button (Ö 12.2)
– Do not switch on motor in high grass,
adapt cutting height (Ö 9.6)
– Allow machine to cool down (Ö 10.5)
– Warm up battery or allow to cool down
(Ö 8.4)
– Remove battery from battery
compartment and dry; clean/dry battery
compartment (Ö 8.3)
– Clean mower housing (Ö 13.2)
– Replace safety plug (#)
Fault:
Motor stops during operation
Possible cause:
– Battery or machine electronics
overheated
– Electrical fault
– Battery not fully charged
– Safety plug incorrectly inserted
– Machine overloaded due to mowing
grass which is too long or too wet
– Lawn mower fault
Remedy:
– Remove battery from battery
compartment; allow lawn mower and
battery to cool down (Ö 8.3)
– Remove battery from battery
compartment and reinsert (Ö 8.3)
– Charge battery (Ö 8.4)
– Insert safety plug (Ö 9.1)
– Adapt cutting height and mowing speed
to mowing conditions (Ö 9.6)
– Repair lawn mower (#)
Fault:
Excessive vibration during operation
Possible cause:
– Blade fastening screw is loose
– Blade is not balanced
Remedy:
– Tighten blade fastening screw (Ö 13.7)
– Re-sharpen (balance) or replace blade
(Ö 13.8)
Fault:
Poor cut, lawn turning yellow
Possible cause:
– Mowing blade is blunt or worn,
– Rate of feed is too high in relation to the
cutting height
Remedy:
– Re-sharpen or replace mowing blade
(Ö 13.8)
– Reduce rate of feed and/or select
correct cutting height (Ö 9.6)
Fault:
Problems switching machine on or
deteriorating motor power.
Possible cause:
– Battery discharged
– Mowing grass which is too long or too
wet
– Mower housing is blocked
– Mowing blades are blunt or worn
Remedy:
– Charge battery (Ö 8.4)
– Adapt cutting height and mowing speed
to mowing conditions (Ö 9.6)
– Clean mower housing (Ö 13.2)
– Re-sharpen or replace mowing blade
(Ö 13.8)
Fault:
Discharge chute blocked
Possible cause:
– Mowing blade is worn
– Mowing grass which is too long or too
wet
Remedy:
– Replace mowing blade (Ö 13.8)
– Adapt cutting height and mowing speed
to mowing conditions (Ö 9.6)
Fault:
Operating time too short
Possible cause:
– Battery not fully charged
– Mowing grass which is too long or too
wet
– Mower housing is blocked
– Mowing blades are blunt or worn
– Battery has reached or exceeded the
end of its service life
Remedy:
– Charge battery (Ö 8.4)
… 54 …


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