Great Plains 3N-4025F Assembly Instructions User Manual
Assembly instructions, General information

Great Plains Mfg., Inc.
© Copyright 2005 Printed
Used with:
Update Instructions
Refer to Figure 1
1.
Remove old opener mount from drill. Discard
opener mount. Keep all other parts for reuse.
2.
Attach new opener mount (5) to frame using two
5/8-11 x 7 1/32 x 6 1/2 u-bolts (1), four 5/8 wash-
er lock springs (8), and four 5/8-11 nuts (7).
3.
Replace old inner pivot tubes with inner pivot
tubes (4) supplied in kit. Discard old inner pivot
tubes. Secure new inner pivot tubes (4) and par-
allel arm pivot bushings (3) to opener mount us-
ing 1/2-13 x 6 1/8 bolts (2) and 1/2-13 nut locks
(6).
4.
Reattach chain and sprocket to opener mount.
5.
Secure parallel arms to inner pivot tube and reat-
tach springs opener mount.
Assembly Instructions
298-889m
Opener Mount Update
• 1525P
• 2025P
• 2525P
• 3N-4025P, 3N-4025F
• Yield-Pro® Planter
General Information
These instructions explain how to install the Opener
Mount Update Kit. The new style mounts allow for use of
the same standard inner pivot tube on both front and rear
pivots of the opener parallel arms.
These instructions apply to:
298-883S
25P Front Opener Mount W/Bush
298-887S
25P Rear Opener Mount W/Bush
298-888S
25P Middle Opener Mount W/Bush
Before You Start
Page 2 is a detailed listing of parts included in the Opener
Mount Update Kit. Use this list to inventory parts received.
Tools Required
• Basic Hand Tools
When you see this symbol, the subsequent instruc-
tions and warnings are serious - follow without ex-
ception. Your life and the lives of others depend on it!
!!
8/4/2005
Figure 1
Opener Mount
23274
NOTE: When replacing an old opener mount with the
new style opener mount, the inner pivot tube must
also be replaced with the new, longer inner pivot tube
provided in the kit. Failure to replace the old inner
pivot tube with the new, longer inner pivot tube will
result in opener malfunction and opener damage.