Great Plains YP3025 Operator Manual - Manual (Page 106)

102 YP3010HDP/3020P/3025 Table of Contents Index Great Plains Manufacturing, Inc.
401-703M Table of Contents Index 2013-09-09
20P Row Unit Chain Tension
The seed meter drive has a spring-loaded idler which
requires no adjusting. However, chain stretch may make
it necessary to shorten the chain.
Refer to Figure 141
For best chain tension the recommended vertical
distance
between chain idlers is:
minimum:
1 ⁄
4
in (6.4 mm)
maximum:
1 ⁄
2
in (12.7 mm)
This measurement should be taken with opener parallel
arms
. horizontal. The front idler should be below
the rear idler .
Refer to Figure 142
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.
Figure 141
20 Series Meter Chain
28024
1
3
2
4
1
4 2
3
Figure 142
20 Series Meter Chain Link
26224
5
6
7
5 6
7