Bosch GFR Professional 25 Original Instructions Manual page 18

OBJ_BUCH-2143-003.book Page 18 Friday, October 7, 2016 5:44 PM
18 | English
Problem Possible Cause
Machine runs intermit- Motor protector has activated
tently
Internal wiring of machine damaged
On/Off switch defective
External cabling damaged
Machine does not cut Cutting blade damaged
Increased vibration Cutting blade damaged
Cutting line broken
Debris build up on cutting head
Blade nut loose
Machine leaves ragged fin- Grass too high/dense
ish and/or labours
Cutting blade blunt
Cutting blade obstructed
Blade fitted in incorrect direction of rotation
Debris build up on cutting head
Motor starts then stops Low battery capacity
immediately
Battery not fully charged
Battery too hot/cold
Grass too high/dense
Nut cannot be removed to Damaged thread on nut/shaft
release cutting blade
Locking pin not located correctly
F 016 L81 659 | (7.10.16)
Corrective Action
Allow motor/electronics to cool for 5 minutes
and cut in stages
Contact Service Agent
Contact Service Agent
Contact Service Agent
Replace the blade (always wear protective
gloves). Ensure blade is not upside-down (8T
and saw blades).
Replace the blade (always wear protective
gloves)
Replace line (see figure 7 of illustrations)
Clean slip plate groove
Tighten nut bolt to 20 Nm ensuring the blade,
nut shield and dome washer are all present and
central (always wear protective gloves) (see
figure 5 of illustrations)
Grass too high: Cut in stages
Grass too dense: Reduce rate of cutting every
time
Flip/replace blade
Check underneath the machine and clear out as
necessary (always wear protective gloves)
Re-fit blade correctly (only 8T and saw blades)
Clean slip plate groove
Ensure battery is fully charged before use
Check battery display – charge battery if nec-
essary
Allow battery to cool down/warm up – check
battery display
Grass too high: Cut in stages
Grass too dense: Reduce rate of cutting every
time
Lubricate shaft to aid removal
Reinsert locking pin and apply light pressure
whilst rotating shaft (see figure 5 of illustra-
tions)
Bosch Power Tools