BMW K 1100 LT/RS Repair Manual page 113

Starter does not turn when start switch is
operated.
no
Switch on light. Does light operate?
yes
no
Check carbon brushes.
Are carbon brushes too short?
no
Are carbon brushes jammed?
no
Is spring pressure acting on carbon brushes
too low?
yes
Connect jumper at connection between termi-
nal 50 and 30. Does starter turn?
Check ignition switch and supply line.
Is ignition switch defective?
no Replace ignition switch.
Is there a break in supply line?
Repair break.
yes
Replace carbon brushes.
yes
Release carbon brushes.
yes
Replace compression spring.
yes
yes
yes
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