Viking MB 750 KS, Instruction Manual

Page: 50 / 229

0478 111 9921 A - EN
48
Fault:
Engine does not start
Possible cause:
– Throttle lever set to Stop position
– Choke is not actuated
– No fuel in tank
– Inferior, dirty or old fuel in tank
– Insufficient flow of fuel
– Spark plug dirty or damaged
– Incorrect electrode gap
– Spark plug socket detached from the
spark plug
– Engine is flooded due to several
starting attempts.
– Dirty air filter
– Throttle cable is damaged (e.g. kinked)
Remedy:
– Set throttle lever to the Choke or Start
position (
Ö
11.2)
– Set throttle lever to the Choke position
(
Ö
11.2)
– Refill fuel tank (
Ö
8.8)
– Clean fuel system and carburettor;
always use fresh, good quality fuel
@
,
#
, (
Ö
8.8)
– Check fuel line
@
,
#
– Clean or replace spark plug
@
– Adjust electrode gap
#
– Connect spark plug socket; check
connection between ignition lead and
socket.
#
– Remove spark plug and dry; set throttle
lever to STOP position and pull recoil
starter rope several times with spark
plug removed; screw in spark plug and
connect spark plug socket.
@
– Clean/replace air filter
@
– Repair 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
– Spark plug dirty
Remedy:
– Adapt cutting height and reduce
mowing speed
– Empty fuel tank, clean fuel line and
carburettor
#
– Clean fuel tank
#
– Clean/replace air filter
@
,
#
– Clean spark plug
#
Fault:
No drive when self-propulsion lever is
actuated
Possible cause:
– Self-propulsion cable incorrectly
adjusted
– Self-propulsion cable damaged
(e.g. kinked)
– V-belt worn
Remedy:
– Check adjustment (
Ö
12.10)
– Replace cable
#
– Replace V-belt
#
MB 750.2 KS:
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
86 dB(A)
Uncertainty K
pA
1 dB(A)
L/W/H 173/53/106 cm
Weight 62 kg
MB 755.2 KS:
In accordance with
Directive
2000/14/EC:
Guaranteed sound
power level L
WAd
98 dB(A)
In accordance with
Directive
2006/42/EC:
Sound pressure level
at workplace L
pA
89 dB(A)
Uncertainty K
pA
1 dB(A)
L/W/H 173/57/106 cm
Weight 62 kg
1
9. Troubleshooting
#
If necessary, contact a specialist
dealer; VIKING recommends VIKING
specialist dealers.
@
See engine instruction manual.