Yetter 2920-012 User manual

2920-012 DISC SEALER 12” SMOOTH
2920-016 DISC SEALER 16” SMOOTH
2920-016-N DISC SEALER 16” NOTCHED
OPERATOR’S MANUAL
PARTS IDENTIFICATION
2565-412_REV_H •02/2023
YETTER MANUFACTURING CO.
FOUNDED 1930
Colchester, IL 62326-0358
Toll free: 800/447-5777
309/776-3222 (Fax)
Website: www.yetterco.com
E-mail: [e-mail]

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4
BOLT TORQUE
Mounting bolts and hardware
Before operating the Disc Sealer for the first time, check to be sure that all hardware is tight. Check all
hardware again after approximately 50 hours of operation and at the beginning of each season.
All hardware used on the Disc Sealer is Grade 5 unless otherwise noted. Grade 5 cap screws are
marked with three radial lines on the head. If hardware must be replaced, be sure to replace it with
hardware of equal size, strength and thread type. Refer to the torque values chart when tightening
hardware.
Important: Over tightening hardware can cause as much damage as when under tightening.
Tightening hardware beyond the recommended range can reduce its shock load capacity.
The chart below is a guide for proper torque. Use it unless a specified torque is called out elsewhere in the
manual.
Torque is the force you apply to the wrench handle or the cheater bar, times the length of the handle or bar.
Use a torque wrench whenever possible.
The following table shows torque in ft. lbs. for coarse thread hardware.
Lubricate all bearings and moving parts as assembled and make certain that they work freely.
WARNING: Never work around the toolbar/implement while in a raised position without using safety lockups.
CAUTION: The Disc Sealer attachments are very heavy. Pay extra attention to lifting techniques while handling
and or maneuvering the opener during assembly. Failure to do so may lead to personal injury.

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ASSEMBLY
“Barn Yard Setting” – set the sealer blade to 2” closer to the bottom of the knife than the depth that
the knife will be used at. Example: knife at 6” depth, set the blades to 4” above the bottom of the
knife. Adjust the blade pitch as needed to cover the knife track with soil. Tighten all hardware to the
recommended amount of torque unless otherwise stated.
MAINTENANCE
Lubrication Symbols
Lubricate with grease at hourly interval indicated on symbol.
Lubrication Intervals
IMPORTANT: The recommended service intervals are based on normal conditions; severe or
unusual conditions may require more frequent lubrication.

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PARTS IDENTIFICATION
2920-012A DISC SEALER
MANUFACTURED 06-01-2021 TO PRESENT
ITEM
PART NO
DESCRIPTION
QTY
1
2502-221
5/16-18 X 1 HHFS GRADE 5
8
2
2502-313
½-13 X 3 HHCS GRADE 5
2
3
2502-317
½-13 X 1-3/4 HHCS GRADE 5
2
4
2502-363
½-13 X 4-1/2 HHCS GRADE 5
1
5
2502-364
½-13 X 4 HHCS GRADE 5
2
6
2502-393
5/8-11 X 2-1/2 HHCS GRADE 5
1
7
2505-345
½-13 X 2 CARRIAGE BOLT GRADE 5
4
8
2520-352
½-13 HEX NUT GRADE 2
4
9
2520-357
½-13 LOCK HEX NUT GRADE A
5
10
2520-465
5/8-11 FLANGE NUT GRADE 8
2
11
2520-467
5/8-11 JAM LOCKNUT
1
12
2520-515
¾-10 HEX LOCK NUT GRADE A
1
13
2525-352
½ LOCKWASHER
4
14
2565-162
YETTER DECAL
2
15
2571-181
SMOOTH DISC 12”
2
16
2920-209
PIVOT ARM
1
17
2920-210
MOUNTING BRACKET
1
18
2920-211
SHANK MOUNT BRACKET
1
19
2920-324
¾” EYEBOLT WITH 5/8” EYE
1
20
2920-329
ARM
2
21
2920-330
SPRING BRACKET
1
22
2920-339
CLAMP PLATE SHANK MOUNT
1
23
2920-342
INNER PIVOT BUSHING
1
24
2920-350
SPRING
1
25
2965-501
HUB ASSEMBLY 2.406 SPINDLE
2
26
2965-503
HUB CAP
2
27
2967-503
SPACER ¾”
2
28
2975-302
SPRING BUSHING
1

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PARTS IDENTIFICATION
2920-016A DISC SEALER
MANUFACTURED 06-01-2021 TO PRESENT
ITEM
PART NO
DESCRIPTION
QTY
1
2502-221
5/16-18 X 1 HHFS GRADE 5
8
2
2502-313
½-13 X 3 HHCS GRADE 5
2
3
2502-317
½-13 X 1-3/4 HHCS GRADE 5
2
4
2502-363
½-13 X 4-1/2 HHCS GRADE 5
1
5
2502-364
½-13 X 4 HHCS GRADE 5
2
6
2502-393
5/8-11 X 2-1/2 HHCS GRADE 5
1
7
2505-345
½-13 X 2 CARRIAGE BOLT GRADE 5
4
8
2520-352
½-13 HEX NUT GRADE 2
4
9
2520-357
½-13 LOCK HEX NUT GRADE A
5
10
2520-465
5/8-11 FLANGE NUT GRADE 8
2
11
2520-467
5/8-11 JAM LOCKNUT
1
12
2520-515
¾-10 HEX LOCK NUT GRADE A
1
13
2525-352
½ LOCKWASHER
4
14
2565-162
YETTER DECAL
2
15
2571-173
SMOOTH DISC 16”
2
16
2920-209
PIVOT ARM
1
17
2920-210
MOUNTING BRACKET
1
18
2920-211
SHANK MOUNT BRACKET
1
19
2920-324
¾” EYEBOLT WITH 5/8” EYE
1
20
2920-329
ARM
2
21
2920-330
SPRING BRACKET
1
22
2920-339
CLAMP PLATE SHANK MOUNT
1
23
2920-342
INNER PIVOT BUSHING
1
24
2920-350
SPRING
1
25
2965-501
HUB ASSEMBLY 2.406 SPINDLE
2
26
2965-503
HUB CAP
2
27
2967-302
SPACER ¾”
2
28
2975-302
SPRING BUSHING
1

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PARTS IDENTIFICATION
2920-016A-N DISC SEALER
MANUFACTURED 06-01-2021 TO PRESENT
ITEM
PART NO
DESCRIPTION
QTY
1
2502-221
5/16-18 X 1 HHFS GRADE 5
8
2
2502-313
½-13 X 3 HHCS GRADE 5
2
3
2502-317
½-13 X 1-3/4 HHCS GRADE 5
2
4
2502-363
½-13 X 4-1/2 HHCS GRADE 5
1
5
2502-364
½-13 X 4 HHCS GRADE 5
2
6
2502-393
5/8-11 X 2-1/2 HHCS GRADE 5
1
7
2505-345
½-13 X 2 CARRIAGE BOLT GRADE 5
4
8
2520-352
½-13 HEX NUT GRADE 2
4
9
2520-357
½-13 LOCK HEX NUT GRADE A
5
10
2520-465
5/8-11 FLANGE NUT GRADE 8
2
11
2520-467
5/8-11 JAM LOCKNUT
1
12
2520-515
¾-10 HEX LOCK NUT GRADE A
1
13
2525-352
½ LOCKWASHER
4
14
2565-162
YETTER DECAL
2
15
2571-187
NOTCHED DISC 16”
2
16
2920-209
PIVOT ARM
1
17
2920-210
MOUNTING BRACKET
1
18
2920-211
SHANK MOUNT BRACKET
1
19
2920-324
¾” EYEBOLT WITH 5/8” EYE
1
20
2920-329
ARM
2
21
2920-330
SPRING BRACKET
1
22
2920-339
CLAMP PLATE SHANK MOUNT
1
23
2920-342
INNER PIVOT BUSHING
1
24
2920-350
SPRING
1
25
2965-501
HUB ASSEMBLY 2.406 SPINDLE
2
26
2965-503
HUB CAP
2
27
2967-302
SPACER ¾”
2
28
2975-302
SPRING BUSHING
1

9
PARTS IDENTIFICATION
MANUFACTURED 07-01-1997 TO 06-01-2021

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ITEM
PART NO
DESCRIPTION
QTY
1
2502-221
5/16-18 X 1 HHFS GRADE 5
4
2
2502-222
5/16-18 X 1-1/4 HHFS GRADE 5
4
3
2502-225
5/16-18 X 1-1/2 HHFS GRADE 5
4
4
2940-560
SET SCREW
1
5
2965-500
HUB ASSEMBLY 1.406 SPINDLE
1
6
2965-501
HUB ASSEMBLY 2.406 SPINDLE
1
7
2965-502
HUB ASSEMBLY 1.157 SPINDLE
1
ITEM
PART NO
DESCRIPTION
QTY
1
2505-207
5/16-18 X 1-1/4 CARRIAGE HEAD BOLT GRADE 5
4
2
2520-206
5/16-18 FLANGE LOCK NUT
4
3
2570-742
D-BOLT FLANGE HEAD 5/8-11 X 3.812 GRADE 8
1
4
2965-128
HUB/BEARING ASSEMBLY
1
2550-069
SEAL
1
2570-594
BEARING
1
2570-715
INSERT
1
2965-351
HUB
1
2533-110
GREASE FITTING
1
5
2965-352
HUB CAP
1
6
2571-173
16” SMOOTH DISC
1
2571-181
12” SMOOTH DISC
1
2571-187
16” NOTCHED DISC
1