Troubleshooting - Viking MB 650 T Instruction Manual

MB 655.3 VS:
Cutter bar drive BBC
Self-propulsion, rear
wheels Vario gearbox
Weight 49 kg
Engine
Design: 4-stroke com-
bustion engine
Manufacturer, type Briggs & Stratton
Series 750
Displacement 161 ccm
Starter Rope start
Nominal output at 2,5 - 2800
nominal speed kW - rpm
Fuel tank 0,9 l
Sound emissions
In accordance with Directive 2000/14/EC:
Guaranteed sound
power level L 98 dB(A)
WAd
In accordance with Directive 2006/42/EC:
Sound pressure level
at workplace L 84 dB(A)
pA
Uncertainty K 2 dB(A)
pA
Hand-arm vibrations
Specified vibration characteristic in
accordance with EN 12096:
Measured value a 3,00 m/sec²
hw
Uncertainty K : 1,50 m/sec²
hw
Measurement in accordance with
EN 20643
MB 655.3 YS:
Cutter bar drive BBC
Self-propulsion, rear Hydrostatic
wheels gearbox
Weight 56 kg
Engine
Design: 4-stroke com-
bustion engine
58
Manufacturer, type Kawasaki
FJ 180 V KAI
Displacement 179 ccm
Starter Rope start
Nominal output at 2,9 - 2800
nominal speed kW - rpm
Fuel tank 1,6 l
Sound emissions
In accordance with Directive 2000/14/EC:
Guaranteed sound
power level L 98 dB(A)
WAd
In accordance with Directive 2006/42/EC:
Sound pressure level
at workplace L 84 dB(A)
pA
Uncertainty K 2 dB(A)
pA
Hand-arm vibrations
Specified vibration characteristic in
accordance with EN 12096:
Measured value a 3,00 m/sec²
hw
Uncertainty K : 1,50 m/sec²
hw
Measurement in accordance with
EN 20643

21. Troubleshooting

If necessary, contact a specialist
dealer; VIKING recommends VIKING
specialist dealers.
@ See engine instruction manual.
Fault:
Engine does not start
Possible cause:
– MB 650 T, MB 650 V, MB 655 V:
Motorstop lever not pressed.
– MB 650 VS, MB 655 VS, MB 655 YS:
Throttle lever is in Stop position.
– 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.
– Lawn mower housing blocked.
– MB 650 VS, MB 655 VS, MB 655 YS:
Throttle cable disengaged or defective
(e.g. kinked).
Remedy:
– MB 650 T, MB 650 V, MB 655 V:
Press motorstop lever to handlebar and
hold. ( 13.2)
– MB 650 VS, MB 655 VS, MB 655 YS:
Set throttle lever to Choke or Start
position. ( 13.4)
– 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 – detach
spark plug socket first.
– MB 650 VS, MB 655 VS, MB 655 YS:
Attach or replace throttle cable.
Fault:
Starting problems or deteriorating engine
power
Possible cause:
– Mowing at an excessively low cutting
height or fast speed
– Water in fuel tank and carburettor;
carburettor blocked
– Fuel tank contaminated
– Air filter dirty
0478 111 9931 B - EN