Bosch ROTAK 320 Operating Instructions Manual page 16

F016 L70 451.book Seite 5 Mittwoch, 31. Januar 2007 9:38 09
Fault Finding
The following table gives checks and actions that you can perform if your machine does not operate correctly.
If these do not identify/remedy the problem, contact your service agent.
Warning: Switch off and remove plug from mains before investigating fault.
Symptom
Machine fails to operate
Machine functions
intermittently
Machine leaves ragged
finish
or
motor labours
Cutting blade not rotating Cutting blade obstructed
Excessive vibration/
noise
16 • F016 L70 451 • 07.01
Possible Cause
Power turned off
Mains socket faulty
Extension cable damaged
Fuse faulty/blown
Mower in long grass
Motor protector has activated
Safety cut out has activated
Extension cable damaged
Machines internal wiring damaged
Motor protector has activated
Safety cut out has activated
Height of cut too low
Cutting blade blunt
Underside of machine badly clogged
Blade fitted upside down
Blade nut/bolt loose
Blade nut/bolt loose
Cutting blade damaged
English - 5
Remedy
Turn power on
Use another socket
Inspect cable, replace if damaged
Replace fuse
Increase height of cut and tilt mower
Allow to cool for a few minutes and in-
crease height of cut
At this time do not operate the switch
lever 1 as this will prolong the reset
time of the safety cut out
Inspect cable, replace if damaged
Contact Service Agent
Allow to cool for a few minutes and in-
crease height of cut
At this time do not operate the switch
lever 1 as this will prolong the reset
time of the safety cut out
Increase height of cut (see "Height of
Cut Adjustment")
Replace blade
(see "Blade Maintenance")
Clean machine (see "After Mowing/
Storage")
Refit blade correctly (see "Blade Main-
tenance")
Clear obstruction
Tighten blade nut/bolt
Tighten blade nut/bolt
Replace blade.