Maintenance And Service - Bosch ALR 900 Operating Instructions Manual

Problem Possible Cause
Machine functions Extension cable damaged
intermittently
Internal wiring of machine
damaged
Worn/Missing tines/blades
Conditions too wet
Too much debris on the ground See below*
Possible clogging
Raking/Verticutting too low for
the conditions
Grass too long
Very uneven surface
Grassbox full
Machine labours or belt squeals Height of cut too low
Cutting tines/blades not rotat- Cutting tines/blades obstructed
ing by grass
Belt is slipping or is damaged
Excessive vibrations/noise Cutting tines/blades damaged
Poor collection Raking/Verticutting in wet con-
ditions
Raking/Verticutting too low for
the conditions
Possible clogging
Blocked side grilles
Missing tine springs (ALR 900
only)
*In conditions with excessive tree debris (e. g. leaves, twigs, etc.) first clear the surface by using the
machine with a height of cut setting of either 3 or 4.

Maintenance and Service

Maintenance and Cleaning
Stop, remove plug from the power supply
and remove the grassbox.
Always wear gardening gloves when han-
dling or working near the sharp tines/blade.
Note: To ensure long and reliable service, carry
out the following maintenance regularly.
Regularly check for obvious defects such as
loose, dislodged or damaged tines/blades,
loose fixings, and worn or damaged compo-
nents.
Check that covers and guards are undamaged
and correctly fitted. Carry out necessary mainte-
nance or repairs before using.
If the machine should happen to fail despite the
care taken in manufacture and testing, repair
should be carried out by an authorised custom-
er service agent for Bosch garden products.
In all correspondence and spare parts orders,
please always include the 10-digit article
number given on the type plate of the machine.
Removing/Fitting Raker Tines
G
Stop, remove plug from the power supply
and remove the grassbox.
Always wear gardening gloves when han-
dling or working near the sharp tines/blade.
Bosch Power Tools
Polski | 11 | 3 1 65
Po
English
Corrective Action
Inspect cable, replace if dam-
aged
Contact Service Agent
ALR 900:
Fit replacment (see "Remov-
ing/Fitting Raker Tines")
AVR 1100:
Contact Service Agent
Increase height of cut (see "Rak-
ing/Verticutting Tips")
Check underneath the machine
and clear out as necessary (al-
ways wear gardening gloves)
Increase height of cut
Cut grass
Increase height of cut
Empty the grassbox regularly
Increase height of cut (see "Ad-
justing the Cutting Height")
Clear obstruction (always wear
gardening gloves)
Contact Service Agent
ALR 900:
Fit replacment (see "Remov-
ing/Fitting Raker Tines")
AVR 1100:
Contact Service Agent
Increase height of cut (see "Rak-
ing/Verticutting Tips")
Increase height of cut
Check underneath the machine
and clear out as necessary (al-
ways wear gardening gloves)
Clear debris from the outside of
the side grilles
Replace tine springs (always
wear gardening gloves)
Turn the machine over.
Use long-nose pliers to grip the tine 12, press
down and remove the tine 12 from the pin 11.
(see figure G)
The new tine 12 is mounted in reverse order.
After Raking or Verticutting/Storage
Clean the exterior of the machine thoroughly us-
ing a soft brush and cloth. Do not use water, sol-
vents or polishes. Remove all grass and debris,
especially from the ventilation slots 8.
Turn the machine on its side and clean the
tine/blade area. If grass or dirt is compacted in
the tine/blade area, remove with a wooden or
plastic implement.
Always wear gardening gloves when han-
dling or working near the sharp tines/blade.
Store the machine in a dry place. Do not place
other objects on top of the machine. To save
space, fold up the handle fully.
Ensure the cables are not trapped when
folding/unfolding top/bottom handles. Do
not drop the handles.
The machine can be stored with the grassbox
disassembled. (see figure H)
F 016 L70 675 | (11.10)
15
H