AL-KO 870 Handbuch Seite 15

• Carry out a test mow – if the cutting power
is insufficient, screw in the grub screw a
little.
ESM cutter bar
b)
15 • Remove screws
washer under the screw head!
• Pull out part
When remounting part
mounting direction – protruding lug must
point forwards!
For further information on dismounting the
cutter as well as maintenance of the cutter
bar ⇒ see: the separate sheet: ESM –
Cutter Bar Universal SC
15 If the play between part ( and part (
(natural wear) is greater than 1mm,
both parts must be replaced!
17 • Lubricate the cutter drive after every
8 operating hours using a commercial multi-
purpose grease – 2 grease nipples
Resharpening and exchanging the
cutter blades
Resharpen blunt blades with a suitable abrasive
stone keeping the same cutting angle
(approx. 35 – 40°). Dismount the cutters for
this.
Worn or damaged blades must be
replaced ⇒ customer service centre.
Expert inspection is required
for the following:
• if the mower strikes an object
• if the engine stops suddenly
• if the cutter bar is bent
• if the gears are damaged
• if the V belt is defective
Drive gears
18 Check the oil level in the gearbox regularly
• Make sure the mower is horizontal.
• Unscrew the oil plug.
• Oil level: up to lower edge of filling opening
Top up with gear oil, if necessary.
• Oil grade: gear oil SAE 80
• Oil capacity for mowers with:
forward gear only:
forward and reverse gear: approx. 0.50 l
– spring washer and
forwards.
observe
approx. 0.25 l
Engine:
Changing the oil / air filter / spark plug
See the operating manual supplied by
the engine manufacturer.
Adjustment of the Bowden cables
19 a) Cutter bar (without a lock nut)
20 b) Wheel drive
• loosen the lock nut
• use the adjusting screw
Correct setting:
The cutters and the wheel drive should only start
to move after the lever has travelled half the
distance.
• Retighten the lock nuts.
Disposal
Do not dispose of worn-out units
through the household garbage!
The appliance, its packaging and
accessories are all produced from
recyclable materials and must be
RL 2002/96 EG
disposed of accordingly
GB5
to readjust
.