Bosch GRA Professional 36V-48 Original Instructions Manual page 17

OBJ_BUCH-2017-003.book Page 17 Friday, January 20, 2017 9:26 AM
Problem Possible Cause
Poor cutting and Height of cut too low
collection perfor-
Grass too high
mance
Grass wet or damp
Grass is dense
Low battery capacity
Cutting bowl encrusted with mud
Cutting blade blunt
Grass catcher encrusted with mud Clean inside of grass catcher
No collection
No collection
Poor collection
Cutting blade fails to Cutting blade obstructed
operate
Blade bolt loose
Low battery charge
Isolator key off
Poor battery contact
Grass too high
Batteries too hot/cold
Motor protector has activated
Excessive vibra- Blade bolt loose
tions/noise
Cutting blade damaged
Land drive fails to Grass too high
operate
Ground conditions too soft
Low battery capacity
Isolator key off
Poor battery contact
Batteries too hot/cold
Motor protector has activated
GRA 53 P:
Intuitive land drive system does not
respond
If you are unable to resolve the problem using the troubleshooting guide then please contact your dealer in the first instance.
After use/Storage
Correct storage is essential for maintaining the life of the
product. If possible, avoid storage areas with high humidity
which could cause rust or corrosion.
Bosch Power Tools
Corrective Action
Increase height of cut and/or set land drive to a slower speed
Increase height of cut and/or set land drive to a slower speed
Wait until grass is dry or set land drive to a slower speed
Increase height of cut and/or set land drive to a slower speed or cut
grass more frequently
Ensure that batteries are fully charged before use
Clean inside of cutting bowl
Replace/re-sharpen blade
Make sure that the mulching plug is removed
Switch off product, remove isolator key and batteries. Check under-
neath the product and clear obstruction as necessary (always wear
protective gloves).
Check for correct blade
Remove the obstruction
Tighten blade bolt to 30 Nm ensuring that washer is present (always
wear protective gloves)
Recharge battery
Turn key to position 1
Remove battery and re-insert
Increase height of cut and/or set land drive to a slower speed. Tilting
the product backwards slightly to reduce starting load can also help.
Be aware that this may result in thrown debris
Allow batteries to warm up/cool down – check battery display
Allow motor/electronics to cool for 5 minutes and increase height of
cut
Tighten blade bolt to 30 Nm ensuring that washer is present (always
wear protective gloves)
Replace the blade
Increase height of cut or provide manual assistance
Provide manual assistance
Check the charge remaining in the batteries – shown on the battery
display
Check that the isolator switch is in the "1" position
Ensure that batteries are fully inserted
Allow batteries to warm up/cool down – check battery display
Allow motor/electronics to cool for 5 minutes and increase height of
cut
Contact Service Agent
End of season storage: Remove batteries and store both ma-
chine and batteries in a dry safe place away from direct sun-
light.
Do not place objects on top of the machine.
When storing for extended periods, thoroughly clean the
product beforehand.
English | 17
F 016 L81 590 | (20.1.17)