41
KMR 1250 B, LPG, D
Troubleshooting Information
Adjust sealing lips / sealing strips in the
sweeping area
The sealing lips and sealing strips serve essen-
tial functions. They maintain the vacuum level in
the sweeping area required for proper function-
ing, ensuring dust-free sweeping operations at
the same time. Damaged or worn sealing lips /
sealing strips must be replaced.
–
The front sealing lip (1) cannot be adjusted.
If worn, it should be replaced as soon as
possible.
–
Adjust lateral sealing strips (3) to provide a
ground clearance of approx. 1 to 3 mm (0.04-
0.12 in).
–
Adjust rear sealing lip (4) with an afterrunning
clearance of approx. 10 to 20 mm (0.40-0.80
in).
Note:
Always consider the weight of the driver
when doing setup work.
On original units, the lateral sealing lips (3) were
cut in such a way that a gap existed between
these and the rear sealing lip (4). It provided
access for fine dust to be drawn into the engine
compartment and engine proper, and enter the
engine. Replace older sealing lips with new lat-
eral sealing lips (4). They are cut differently at
the back.
Check sealing lips at engine air intake
Together, the sealing lip (6 and 7) on the air-
channel carburetor and the seal on the air chan-
nel blower provide dust-free air to be drawn into
the engine.
The cross-section of the sealing lip (6 and 7) on
the air-channel carburetor was optimized. Seal-
ing strip must be checked for the new cross-
section and possible damage, and must be re-
placed as required.
The seal (8) on the air-channel carburetor must
be checked for damage and deformation, and
replaced as required.
1
Front sealing lip
2
Lateral sealing strip
ORIGINAL
3
Lateral sealing strip
ORIGINAL
4
Rear sealing lip
5
Direction of motion
6
Sealing lip
ORIGINAL
, air-channel carbure-
tor
7
Sealing lip
REVISED
, air-channel carbure-
tor
8
Seal, air-channel blower
Adjusting sealing lips & sealing strips
Lateral sealing lip
Sealing lips, air intake
Excessive Unit Dusting
3
2
1
5
10-20 mm
1-3
mm
1
4
3
5
5
2
3
