Viking MB 443 - Page 32

0478 111 9823 F - EN
30
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. #
Measurement in accordance with
EN 20643
MB 448.1 TX:
Engine: Manufac-
turer, type
Briggs & Strat-
ton, Series 500
Displacement 140 ccm
Nominal output at
nominal speed
1,9 - 2800
kW - rpm
Fuel tank 0,8 l
Cutter bar speed 2800 rpm
Self-propulsion 1 forward gear
with soft starter
Length 147 cm
Width 50 cm
Height 111 cm
Weight 26 kg
Sound emissions
In accordance with Directive 2000/14/EC:
Guaranteed sound
power level L
WAd
96 dB(A)
In accordance with Directive 2006/42/EC:
Sound pressure level
at workplace L
pA
83 dB(A)
Uncertainty K
pA
2 dB(A)
Hand-arm vibrations
Specified vibration characteristic in
accordance with EN 12096:
Measured value a
hw
4,10 m/sec²
Uncertainty K
hw
2,05 m/sec²
Measurement in accordance with
EN 20643
MB 448.1 VC:
Engine: Manufac-
turer, type
Briggs & Strat-
ton, Series 625
Displacement 150 ccm
Nominal output at
nominal speed
2,2 - 2800
kW - rpm
Fuel tank 0,8 l
Cutter bar speed 2800 rpm
Self-propulsion Vario forwards
Length 147 cm
Width 50 cm
Height 113 cm
Weight 28 kg
Sound emissions
In accordance with Directive 2000/14/EC:
Guaranteed sound
power level L
WAd
96 dB(A)
In accordance with Directive 2006/42/EC:
Sound pressure level
at workplace L
pA
83 dB(A)
Uncertainty K
pA
2dB(A)
Hand-arm vibrations
Specified vibration characteristic in
accordance with EN 12096:
Measured value a
hw
3,00 m/sec²
Uncertainty K
hw
1,50 m/sec²
Measurement in accordance with
EN 20643
19. Troubleshooting
# If necessary, contact a specialist
dealer; VIKING recommends VIKING
specialist dealers.
@ See engine instruction manual.