AL-KO Heckauswurf Comfort 220 l Betriebsanleitung Seite 47

Help in case of malfunction
Malfunction
Starter does not work. Starter battery flat or weakly
Motor is losing pow-
er.
Lawn tractor is vibrat-
ing severely.
Lawn tractor does not
move off.
Rough cut.
Grass catcher does
not fill up.
Cause
charged.
Safety switch on operator's seat
does not function.
Safety switch on brake pedal
does not function.
Mower mechanism switched on.
Fuse on (+) cable of starter bat-
tery.
Grass too long or too wet.
Discharge channel/mower deck
blocked.
Air filter contaminated.
Carburettor setting incorrect.
Blades severely worn down.
Driving speed too fast.
Mower mechanism is damaged.
With hydrostat drive: no travel
drive.
Blade worn, blunt.
Incorrect cutting height.
Engine speed too slow.
Driving speed too fast.
Different tyre pressure at wheels. Inflate to correct air pressure. Read off
Cutting height set too low.
Grass is wet – it is too heavy to
be transported by air stream.
Blades severely worn down.
Grass in lawn too tall.
Remedy
Charge starter battery.
Sit on operator's seat correctly; switch
defective.
Press brake pedal down fully.
Switch off mower mechanism.
Check fuse, replace if necessary.
Correct the cutting height; make clear-
ance for mower mechanism by moving
back a short distance.
Stop engine and take out ignition key!
Clean discharge channel/mower deck.
Clean air filter (see operating instruc-
tions from engine manufacturer).
Have the setting checked (customer
service workshop).
Replace blades (customer service work-
shop).
Reduce driving speed.
Check mower mechanism (customer
service workshop).
Move bypass lever to operating position
(see chapter 7.3 "Pushing the lawn trac-
tor", page 38).
Renew or regrind blade. Reground
blades must be rebalanced (customer
service workshop)!
Correct the cutting height.
Set maximum engine speed.
Reduce driving speed.
correct tyre pressure on tyre.
Correct the cutting height.
Mow at a later time when lawn has dried
out.
Change blade. (Customer service work-
shop)
Mow grass twice:
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