GREAT PLAINS YP4425A, Operating Manual, Page: 79 / 170

YP4425A Table of Contents Index Adjustments 75
2018-07-30 Table of Contents Index 401-805M
•
If wheel does not fall freely , loosen hex-head bolt
and slide wheel arm out just until wheel and arm
move freely. Tighten hex-head bolt
according to
grade:
1
/
2
inch Grade 5 bolt, 75 foot-pounds (102 N-m).
1
/
2
inch Grade 8 bolt, 110 foot-pounds (149 N-m).

Use “ Torque Values Chart ” on page 138 for
reference.
6. Keep turning hex adjuster and moving wheel arm
until the wheel is adjusted properly. When satisfied,
tighten pivot bolt
to 110 foot-pounds (149 N-m).
Adjusting Gauge Wheel Scrapers
Refer to Figure 93 (bottom view)
Scrapers are optional, and may be useful in moist or
sticky soils that tend to accumulate on gauge wheels and
reduce intended planting depth.
To adjust scrapers:
1. Loosen nut .
2. Slide scraper toward gauge wheel until scraper
touches tire.
3. Slide scraper away from wheel leaving a
1
/
8
inch (3 mm) gap at .
4. Rotate scraper left and right around bolt, making
sure it cannot touch tire if bumped in field. If it can
touch tire, back scraper away from wheel until it
cannot.
5. Center scraper angle on bolt until gap is
constant.
6. Tighten nut .
Starting Point
Figure 92
Disc/Gauge Wheel Adjustment
22524
22525
2
2
1
4
4
1
1
1
2
Figure 93
Gauge Wheel Scraper
25273
8
5
6
7
5
6 8
6 8
7
5 7
5