Operator’s manual
Double-sided disc mowers
with central suspension
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8.
DEFECTS AND THEIR REPAIRS
Tab. 7. Defects and their repairs
Defect
Reason
Repair
Mower stops working
(partly)– leaves stripes of
uncut grass between the discs
1
Lack of knives
Put on knives
2
Worn knives
Replace knives
3
Improperly mounted knives
(left – right)
Put on knives strictly acc. to
instructions.
4
Improper front inclination
Adjust inclination strictly acc. to
instructions
5
Too high PTO rpm
(The most frequent mistake)
Reduce PTO rpm (recommended
1600-1800 rpm)
6
Too low work speed
Speed up to V
≥
10 km/h
7
Damaged tractor’s PTO
Repair
8
Lying grass
The inclination - the angle zero
Mower with either tine or roller conditioner may mow improperly in case of
very small grass or after the rain.
The grass is wound on the
forming drums
Mowing lying grass without inclination
towards the front.
Always mow low and fast –
inclination towards the front – 4 cm.
Grass blocks the mower – lack
of grass flow or the flow is
uneven.
Too low work speed
Speed up to
10 km/h or more.
Safety device is working often
without clear reason
Worn elements of safety device or
improper regulation
This repair must be done by
SaMASZ service.
Mower does not work, even
though the drive is transmitted
from the tractor
Damaged intersecting axis gear
Replace intersecting axis gear
Mower is blocked
Damaged gears in the cutterbar.
Damaged bearings in the disc hub.
This repair must be done by
SaMASZ service.
Mower’s hydraulics does not
work
Damaged or dirty hydraulic cylinder
and check valve
Replace or clean hydraulic
connector and check valve.
Tractor’s hydraulic system is damaged.
Check tractor’s hydraulic system.
Conveyor is being blocked
by grass
Too low a conveyor speed
Increase – adjust to the grass
weight
Leaking cylinder
Contaminated oil in the tractor
hydraulics
Replace oil in the tractor
hydraulics Provide brand new
cylinder repair kit and replace
worn gaskets
