Kärcher HDS 9/50 De Tr1 Service Manual page 157

11.15.3 Checking / replacing the V-belt of the alternator
Check the tension of the V-belt
CAUTION
Risk of damage!
If the V-belt is not sufficiently tensioned, this can cause an
overheating of the engine and to an insufficient battery
charge.
Defective V-belts must be replaced immediately.
Replacing V-belt
 Shut off the motor and remove the key from the key
switch.
 Press the belt with your thumb to check the V-belt ten-
sion.
It should be able to push in the V-belt:
- with position A: 10-14mm
- with position B: 7-10mm
- with position C: 9-13mm
NOTE
The preferred test position is "B".
 Loosen the 4 screws of the protective casing from the
fan wheel (do not unscrew completely!)
 Turn the protective casing in the counter-clockwise di-
rection until the screws are located over the recesses
on the air casing.
 Slide the protective casing into the air box so that there
is a sufficiently large gap for unthreading the V-belt.
English 5.906-736.0 Rev. 00 (07/15)
157