
21
11. TROUBLE SHOOTING (PROBLEM ANALYSIS)
Problem
Possible cause
Solution
No seeds come out of the
machine.
The seeds are damp and stick to
each other.
Use dry seeds.
The gearbox is set incorrectly.
Set the gearbox to the correct setting.
The seed flap is set incorrectly.
Set the seed flap to the correct
setting.
No seeds in the seed tray
Check and top up.
Sowing pipes / funnels are
blocked / dirty.
Rectify / clean the blockage.
The seeds are not in the
sow trench.
Knives are worn out.
Replace the knives.
Wrong working depth
Adjust the working depth of the
machine.
Soil is too wet.
Postpone the treatment until the
conditions are better.
Ground is too hard.
Aerate or give water and postpone
sowing until later.
Attaching tension of the tractor is
too low.
Put towing arms in a higher hole.
Top rod is adjusted incorrectly.
Adjust the top rod correctly.
Too much felt in the top layer of
the field
Remove the felt
Too little weight
Put extra weight
Too many seeds come
out of the machine.
The seed flap setting is incorrect. Adjust the seed flap setting.
Gearbox setting is too high.
Set the gearbox to the correct setting.
Sow trenches are shaped
poorly.
Worn-out knives
Replace the knives.
Knives do not rotate / are stuck.
Adjust the top rod correctly.
Bearings of the knives are worn
out.
Replace the bearings
Poor ground conditions
Decrease the working depth. Aerate
or give water and repeat sowing later.
Too much felt in the top layer of
the field
Remove the felt
Top rod is adjusted incorrectly.
Adjust the top rod correctly.
Sow trenches are not
closed.
Trenches are too wide.
Decrease the working depth.
Ground is too hard.
Aerate or give water and postpone
sowing until later.
Table 6
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