Viking MB 3 RT Manuel D'utilisation page 48

– 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!). ( 12.1)
– Select a higher cutting height or reduce
the pushing speed. ( 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. ( 7.4)
– Clean cooling ribs. ( 12.1)
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.
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Fault:
Poor cut, lawn turning yellow
Possible cause:
– Mowing blade is blunt or worn.
– Mowing speed is too high in relation to
cutting height.
– Housing is not parallel to ground.
Remedy:
– Sharpen or replace mowing blade.
( 12.2), ( 12.3),
– Select a higher cutting height or reduce
the pushing speed. (
– Adjust front wheel cutting height
adjustment to rear wheel cutting height
adjustment. ( 8.6)
21. Service schedule
21.1 Handover confirmation
21.2 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.
Service performed on
Next service date
8.4)
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