Kärcher KMR 1250 B Service Manual page 38

Troubleshooting Information
Excessive Unit Dusting
3
2
1
Sealing shaker motor flange
8 7 5
Coarse debris flap in open position
1 Seal ring
2 Flange assembly
3 Welded ring (mating rim for seal ring)
4 Retainer, control cable
5 Coarse debris flap
6 Adjusting screw, coarse debris flap
7 Control cable
5 Sheet metal guard
38
6 4
Check filter receptacle
A noticeable accumulation of dust in the engine
compartment indicates a leaky filter receptacle.
The seal ring (1) is defective or the three open-
ings on flange (2) are too large, and protrude
beyond the welded ring (3).
– Pull off seal ring (1), check and replace as
required.
– To seal the openings, apply silicon sealer
around the entire circumference outside the
welded ring (3).
– Replace seal ring (1), ensure proper seat-
ing.
Check coarse debris flap
When the coarse dirt flap is open, the brush roller
flings the dirt and dust away toward the front
without sweeping it up.
The coarse debris flap (5) must open and shut
easily. If required, clean the control cable (7),
and lubricate with new grease (P/N 6.288-107)
or spray in with teflon spray (P/N 6.288-125).
When opened, the gap of the coarse debris flap
(5) should be at least 40 mm (1.58 in) wide. In its
lowered state, it should trail by approx. 10 to 20
mm (0.40-0.80 in).
The coarse debris flap (5) is adjusted with the
adjusting screw (6).
Note:
If the coarse debris flap trails excessively, it
may get caught in the brush roller.
When replacing the control cable (7), care must
be taken that the retainer (4) remains in the orig-
inal horizontal position. This prevents the coarse
debris flap from being pulled inward again after
a short while, breaking the control cable as a
result.
To straighten out the retainer (4) or to access the
adjusting screw (6), the sheet metal guard (8)
must be removed.
KMR 1250 B, LPG, D