Troubleshooting - Viking MB 2 R Instruction Manual

MB 2.2 RT
Uncertainty K 2.36 m/s
hw
Measurement in
accordance with
EN 20643
Drive: Front wheel 1 forward gear
Drive speed 3.5 km/h
L/W/H 140/50/105 cm
Weight: 29 kg

20. Troubleshooting

If necessary, contact a specialist
dealer; VIKING recommends VIKING
specialist dealers.
@ See engine instruction manual.
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.
Remedy:
– Press motorstop lever to handlebar and
hold. ( 11.1)
– Refill fuel tank. ( 7.3)
– Clean fuel line. ,
– Always use fresh, good quality fuel,
unleaded petrol; clean
carburettor. ,
– Clean air filter. ,
42
– Connect spark plug socket; check
connection between ignition lead and
2
socket.
– Clean or replace spark plug; adjust
electrode gap.
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!). (
– Select a higher cutting height or reduce
the pushing speed. (
– 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. (
– Clean cooling ribs. (
,
12.1)
8.4)
12.5)
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.
Fault:
Poor cut, lawn turning yellow.
Possible cause:
– Mowing blade is blunt or worn.
– Rate of feed is too high in relation to
cutting height.
– Housing is not parallel to ground.
Remedy:
– Sharpen or replace mowing blade
( 12.3), ( 12.4).
– Reduce rate of feed and/or select
correct cutting height.
– Set front and rear cutting height to
same cutting level. ( 8.4)
Fault (MB 2 RT):
No drive when self-propulsion lever is
actuated.
Possible cause:
– Self-propulsion cable defective (e.g.
kinked).
Remedy:
– Replace cable.
0478 111 9926 A - EN