Viking MB 545, Instruction Manual

Page: 58 / 382

0478 111 9932 B - EN
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– 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.
– Lawn mower housing blocked.
Remedy:
– Press motorstop lever to handlebar and
hold. ( Ö 11.1)
– MB 545 VE : Charge or replace battery.
( Ö 8.6)
– Top up fuel; clean fuel line.
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– Always use fresh, good quality fuel,
unleaded petrol; clean carburettor.
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– Clean air filter.
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– Connect spark plug socket; check
connection between ignition lead and
socket.
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– Clean or replace spark plug; adjust
electrode gap.
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– Clean lawn mower housing (disconnect
spark plug socket first) and additionally
remove battery on
MB 545 VE .
( Ö 12.2)
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 (disconnect
spark plug socket first) and additionally
remove battery on
MB 545 VE . ( Ö 12.2)
– Select higher cutting height or reduce
pushing speed. ( Ö 8.5)
– Empty fuel tank, clean fuel line and
carburettor.
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– Clean fuel tank.
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– Clean air filter.
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– Clean spark plug.
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Fault:
Mowing channel blocked
Possible cause:
– Mowing blade is worn.
– Mowing grass which is too long or too
wet.
Remedy:
– Replace mowing blade. ( Ö 12.4)
– Adapt cutting height and mowing speed
to mowing conditions. ( Ö 10.), ( Ö 8.5)
Fault:
Poor cut, lawn turning yellow
Possible cause:
– Blade is blunt or worn.
– Mowing speed is too high in relation to
cutting height.
Remedy:
– Sharpen or replace blade ( Ö 12.6),
( Ö 12.4),
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– Reduce mowing speed and/or select
correct cutting height (do not work at
lowest cutting height). (
Ö 8.5), ( Ö 11.3)
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 12.2)
Fault:
No drive when self-propulsion lever is
actuated.
Possible cause:
– Self-propulsion cable incorrectly
adjusted.
– Self-propulsion cable defective (e.g.
kinked).
– V-belt worn.
– Gearbox defective.
Remedy:
– Check cable adjustment. ( Ö 12.7)
– Replace cable.
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– Replace V-belt.
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– Replace gearbox.
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Fault:
Vario drive speed control not functioning.
Possible cause:
– Vario drive lever moved in wrong
direction.
– Vario drive cable disengaged or
damaged (e.g. kinked).
Remedy:
– Move Vario drive lever in correct
direction. ( Ö 11.3)
– Attach or replace Vario drive cable.
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