Viking MB 545 Gebrauchsanleitung Seite 58

– 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. ( 11.1)
– MB 545 VE: Charge or replace battery.
( 8.6)
– Top up fuel; clean fuel line.
– Always use fresh, good quality fuel,
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.
– Clean lawn mower housing (disconnect
spark plug socket first) and additionally
remove battery on MB 545 VE.
( 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.
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– Spark plug dirty.
Remedy:
– Clean lawn mower housing (disconnect
spark plug socket first) and additionally
remove battery on
MB 545 VE. ( 12.2)
– Select higher cutting height or reduce
pushing speed. ( 8.5)
– Empty fuel tank, clean fuel line and
carburettor.
– Clean fuel tank.
– Clean air filter.
– Clean spark plug.
Fault:
Mowing channel blocked
Possible cause:
– Mowing blade is worn.
– Mowing grass which is too long or too
wet.
Remedy:
– Replace mowing blade. (
– Adapt cutting height and mowing speed
to mowing conditions. (
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 (
( 12.4),
– Reduce mowing speed and/or select
correct cutting height (do not work at
lowest cutting height). (
Fault:
Engine overheating.
Possible cause:
– Oil level in engine too low.
– Cooling ribs dirty.
Remedy:
– Change engine oil. (
– Clean cooling ribs. (
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:
12.4)
– Check cable adjustment. (
– Replace cable.
10.), ( 8.5)
– Replace V-belt.
– Replace gearbox.
Fault:
Vario drive speed control not functioning.
Possible cause:
– Vario drive lever moved in wrong
direction.
– Vario drive cable disengaged or
12.6),
damaged (e.g. kinked).
Remedy:
– Move Vario drive lever in correct
direction. (
8.5), ( 11.3)
– Attach or replace Vario drive cable.
7.6)
12.2)
12.7)
11.3)
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