Viking MB 443 C, Instruction Manual

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0478 111 9823 E - EN
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Fault:
Engine does not start
Possible cause:
– Motorstop lever not pressed.
– No fuel in tank; fuel line blocked.
– Inferior, dirty or old fuel in tank.
– Air filter dirty.
– Spark plug socket detached from spark
plug; ignition lead not properly fastened
to socket.
– Spark plug dirty or damaged; incorrect
electrode gap.
– Primer not pressed.
Remedy:
– Press motorstop lever to handlebar and
hold. ( Ö 9.2)
– Top up fuel; clean fuel line.
#
– Always use fresh, good quality fuel,
normal unleaded petrol; clean
carburettor.
#
– Clean air filter.
#
– Connect spark plug socket; check
connection between ignition lead and
socket.
#
– Clean or replace spark plug; adjust
electrode gap.
#
– Press primer three times before
starting. ( Ö 11.1)
Fault:
Starting problems or deteriorating engine
power.
Possible cause:
– Lawn mower housing blocked.
– Mowing at an excessively low cutting
height or propulsion speed is too high in
relation to the cutting height.
– Water in fuel tank and carburettor;
carburettor blocked.
– Fuel tank contaminated.
– Air filter dirty.
– Spark plug dirty.
Remedy:
– Clean lawn mower housing (detach
spark plug socket!). ( Ö 12.3)
– Select a higher cutting height or reduce
the pushing speed. ( Ö 8.4)
– Empty fuel tank, clean fuel line and
carburettor.
#
– Clean fuel tank.
#
– Clean air filter.
#
– Clean spark plug.
#
Fault:
Engine overheating.
Possible cause:
– Oil level in engine too low.
– Cooling ribs dirty.
Remedy:
– Change engine oil. ( Ö 7.6)
– Clean cooling ribs. ( Ö 12.3)
Fault:
Excessive vibration during operation.
Possible cause:
– Cutting unit defective.
– Engine mounting loose.
Remedy:
– Check mowing blade, blade shaft and
blade fastening (blade fastening screw
and retaining washer), and repair if
necessary.
#
– Tighten engine mounting bolts.
#
Fault:
Poor cut, lawn turning yellow
Possible cause:
– Mowing blade is blunt or worn,
Remedy:
– Sharpen or replace the mowing blade
( Ö 12.6), ( Ö 12.5),
#
20. 1 Handover confirmation
20.2 Service confirmation
Please hand this instruction manual
to your VIKING specialist dealer in
the case of maintenance work.
He will confirm the service operations
performed in the pre-printed boxes.
20. Service schedule
Service performed on
Next service date
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