Multiva Optima T Series, Operation And Maintenance Manual, Page: 18 / 41

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4.5. Adjusting working depth
Working depth must always be measured from behind the harrow, from tilled soil and the harrow
should be adjusted according to each field block and the sown plant. The adjustment must be carried
out according to the hardest soil of the block. On softer areas, the working depth may be decreased
during tilling by using the depth adjustment hydraulics and the depth indicator.
The lowest working depth of the harrow is adjusted with the limiter pieces of the centre section
cylinder. Limiter pieces can limit the depth in steps of 5 mm. The harrow must be slightly raised up so
that the adjustment can be made. Note a danger of crushing. Turn off the tractor always before making
any adjustments.
NB! Limiter pieces must be in either of the extreme positions, ie. either turned against the piston rod or
fully to the side.
4.6. Adjusting the depth scale
The scale under the limiter pieces can be adjusted to correspond to the actual working depth by
opening the wing nut located under the scale (point 1). After the adjusting, the scale is locked with the
wing nut.
The working depth indicator (in front of the harrow, in the centre) can be adjusted to show the true
depth in centimetres. After you have adjusted the harrow to desired depth, measure the true working
depth from the tilled soil behind the harrow. The scale is set to indicate the same working depth.
Loosen the locking bolt of the scale (point 2), using a 17 mm key, and turn the scale.