Great Plains YP1220 Operator Manual - Manual (Page 65)

Great Plains Manufacturing, Inc. Maintenance and Lubrication 61
03/14/2012 401-506M
Refer to Figure 70
Note: Be sure chain is installed with the chain connector
link retainer clip opening (split end) facing the
opposite direction of the chain travel . Insert the
link in the chain for easiest access to the clip, nor-
mally towards the centerline
of the opener.
Disk Spreaders
Note: It is normal for the blade spreader to have some
looseness in the holder and between the blades.
Some looseness is required for proper operation.
Refer to Figure 71
1.
Remove side gauge wheels from arms to access
row-unit disks.
2. With the unit raised, check blade spreader for
wear. Replace spreader if it is 1 ⁄
2
in wide or narrower.
3. To replace, remove disk blade . Take note of the
number of shims (spacers) on the inside and out-
side of each disk.
4. Drive out roll pins and install new spreader.
5. When reinstalling disk blades, put the shims back
as they were, unless also adjusting disk contact on
worn disks.
Figure 70
20 Series Meter Chain Link
26224
5
8
6
7
5 6
7
8
Figure 71
Disk Spreaders
28025
1
4
2
3
3
1
2
3
4
3