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Repair Information
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Simplicity 1691975, 1691331, 1692491, 1691974, 1691973 Repair Information

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• Pages labeled with the text “THIS PAGE INTENTIONALLY BLANK” are placement pages ONLY, and should NOT be printed.
• EXACT specifications on the print & job specs should already be known to you. In you are uncertain of what these specifications are, please contact Simplicity Technical Publications.
• (Note: We will do our best to answer your questions concerning this job, but may need to transfer you to another department within our company for additional specifications and job requirements).
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If you have further questions on how to utilize this file, please contact
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THIS PAGE INTENTIONALLY BLANK
Repair Information
Neutral Adjustments
For Hydrostatic Drive Tractors
Volume I Fifth Edition (1975 – 1997 Model Year)
TP 500-1220-06-XX-SMA
Rev. 7/1999
MANUFACTURING INC. 500 N. Spring Street / PO Box 997 Port Washington, WI 53074-0997 USA
www.simplicitymfg.com
© Copyright 1999, Simplicity Manfacturing, Inc. All Rights Reserved. Printed in USA
Table of Contents
Page
Section 1. Commercial Front-Cut Riders with Dual Eaton Model 7 Hydrostatic ................................................6
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
CFC Series/Procut 3000 Series
1691969 - 20 HP 1691968 - 20 HP 1691967 - 18 HP 1691966 - 18 HP 1691965 - 16 HP 1691964 - 16 HP
1691846 - 20 HP 1691845 - 20 HP 1691844 - 18 HP 1691843 - 18 HP 1691842 - 16 HP 1691841 - 16 HP
1691975 - 20 HP 1691974 - 18 HP 1691973 - 16 HP 1691972 - 20 HP
1691971 - 18 HP 1691970 - 16 HP 1691882 - 16 HP 1691876 - 18 HP
Section 2. Large-Frame Tractors with Shaft Drive - Sundstrand Model 15
Hydrostatic (Peerless 2600-002 or 2600-008) ........................................................................... 11
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
18 & 20 GTH & SunStar Series 1900 & Ultima Series 2900 Series
1692521 - 18 HP 1692456 - 20 HP 1692454 - 20 HP 1692135 - 20 HP 1692133 - 20 HP 1692131 - 18 HP 1691953 - 20 HP 1691926 - 20 HP 1691924 - 18 HP
1691710 - 20 HP 1691528 - 18 HP 1691381 - 20 HP 1691380 - 18 HP 1691357 - 16 HP 1691250 - 14 HP 1691018 - 20 HP 1691017 - 18 HP
1692523 - 18HP 1692460 - 20 HP 1692458 - 20 HP 1692141 - 20 HP 1692139 - 20 HP 1692137 - 18 HP 1691955 - 20 HP 1691397 - 18 HP
1691392 - 20 HP 1691391 - 18 HP 1691389 - 16 HP 1691387 - 14 HP 1691307 - 18 HP 1691020 - 20 HP 1691019 - 18 HP
1692525 - 18 HP 1692507 - 20 HP
1692505 - 20 HP
Section 3. Large-Frame Tractors with Belt Driven - Sundstrand Model 15 Hydrostatic.................................12
SIMPLICITY
Sovereign, 17GTH-L, AGCO ALLIS MASSEY FERGUSON
7000 & 7100 Series, 7790 900 & 700 Series 2800 Series
1692798 - 18 HP 1692796 - 18 HP 1692450 - 18 HP 1692143 - 18 HP 1691957 - 17 HP 1691717 - 17 HP 1691382 - 16 HP 1690890 - 18.5 HP 1690723 - 14 HP 1690640 - 19 HP 1690638 - 19 HP 1690572 - 17 HP 1690571 - 17 HP 1690570 - 16 HP
Section 4.
1690569 - 16 HP 1690480 - 17 HP 1690479 - 17 HP 1690478 - 16 HP 1690477 - 16 HP 1690473 - 12 HP 1690433 - 18 HP 1690431 - 18 HP 1690429 - 16 HP 1690427 - 16 HP 1690352 - 12 HP 1690342 - 16 HP 1690202 - 16 HP 1690006 - 16 HP
1692847 - 18 HP 1692845 - 18 HP 1692452 - 18 HP 1692144 - 18 HP 1691960 - 17 HP 1691718 - 17 HP 1691383 - 16 HP 1691139 - 18.5 HP 1691124 - 14 HP 1691122 - 16 HP 1690894 - 18.5 HP 1690727 - 14 HP
1690642 - 19 HP 1690575 - 16 HP 1690574 - 17 HP 1690519 - 17 HP 1690516 - 12 HP 1690367 - 18 HP 1690217 - 12 HP 1690214 - 12 HP 1690211 - 16 HP 1690076 - 12 HP 1690014 - 16 HP
1692852 - 18 HP 1692849 - 18 HP 1692503 - 18 HP
Tractors with Tuff Torq K215-A & HydroGear (Sundstrand) Hydrostatic, BDU-21L ........................
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
Landlord, 18, 16GTH Series 1700 Series 2700 Series
1692631 - 16 HP 1692442 - 18 HP 1692440 - 16 HP
1692042 - 16 HP 1692006 - 18 HP
1692633 - 16 HP 1692448 - 18 HP 1692446 - 16 HP
1692044 - 16 HP 1692036 - 18 HP
1692501 - 18 HP
1
13
Table of Contents (Continued)
Page
Tractors with Hydro-Gear 216-3010L Hydrostatic Transaxle...............................................................................................
15
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
Landlord Series 1700 Series 2700 Series
1692788 - 18 HP 1692786 - 17 HP 1692784 - 16 HP
1692576 - 18 HP 1692572 - 16 HP
1692841 - 18 HP 1692839 - 17 HP 1692837 - 16 HP
1692578 - 18 HP 1692574 - 16 HP
1692854 - 17 HP 1692843 - 18 HP 1692580 - 18 HP
Section 5. Tractors with Eaton 850 Transaxle..........................................................................................................17
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
17, 16GTH & 6500 Series 1800 Series
1691824 - 17 HP 1691766 - 16 HP
1691732 - 17 HP 1691263 - 16 HP
1691769 - 16 HP 1691682 - 17 HP 1691560 - 14 HP
1691471 - 16 HP 1691470 - 13 HP
Section 6. Tractors with Tuff Torq K60 Hydrostatic Transaxle............................................................................ 18
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
Broadmoor, 12.5 & 16LTH Series 1600 Series
1692182 - 14 HP 1692073 - 12.5 HP
1692071 - 16 HP
1692184 - 14 HP 1692076 - 13 HP
1692075 - 16 HP
Tractors with HydroGear 311-0750/311-0800 Transaxle ................................................................................................ 19
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
Broadmoor Series 1600 Series 2600 Series
1692776 - 16 HP 1692774 - 15 HP 1692772 - 14 HP 1692609 - 15 HP 1692528 - 15 HP 1692420 - 16 HP
1692416 - 14 HP 1692414 - 14 HP 1692283 - 16 HP 1692279 - 14 HP 1692261 - 12.5 HP
1692813 - 16 HP 1692811 - 15 HP 1692809 - 14 HP 1692613 - 15 HP 1692530 - 15 HP 1692436 - 16 HP
1692432 - 14 HP 1692430 - 14 HP 1692285 - 16 HP 1692281 - 14 HP 1692265 - 12.5 HP
1692817 - 16 HP 1692815 - 15 HP
1692499 - 16 HP 1692497 - 14 HP
Lawn Tractors with Eaton 750 or 751 Hydrostatic Transaxle........................................................................................21
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
Broadmoor, 12.5 & 16LTH Series 1600 Series
1691886 - 12.5 HP 1691807 - 16 HP
Section 7.
1691795 - 12.5 HP 1691888 - 13 HP 1691817 - 13 HP
Lawn Tractors with HydroGear (Formerly Agri-Fab) Sundstrand BDU10S Transaxle...........................
25
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
Regent, 12LT & 12RT Series 500 Series & 612H
1692156 - 12.5 HP 1692053 - 12 HP
1691931 - 12 HP 1692164 - 12.5 HP 1692057 - 12 HP
1691933 - 12 HP
2
Table of Contents (Continued)
Page
Section 7.
Lawn Tractors with HydroGear 310 - 0500 Transaxle (With Hand Control)..............................................................27
1692403 - 12.5 HP 1692259 - 12.5 HP 1692263 - 12.5 HP1692412 - 12.5 HP 1692495 - 12.5 HP
Lawn Tractors with HydroGear 318-0500/322-0500 Transaxle (With Foot Control) ................................................28
1692354 - 14 HP 1692591 - 14 HP
Lawn Tractors with HydroGear 322-0650 Transaxle (With Foot Control) ..................................................................28
1692762 - 16 HP
(Continued)
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
Regent Series 500 Series 2500 Series
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
Regent Series 500 Series 2500 Series
1692588 - 14 HP
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
Regent Series 500 Series 2500 Series
1692831 - 16 HP
1692835 - 16 HP
Section 8.
Lawn Tractors with Eaton Model 7 Hydrostatic & Peerless 1300 Series Transaxle ...........................
30
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
5200 & 4200 Series 600 Series
1691649 - 16 HP 1691473 - 12.5 HP 1691362 - 16 HP 1691340 - 12 HP 1691271 - 12 HP 1691235 - 12.5 HP 1691234 - 12.5 HP 1691033 - 16 HP 1691032 - 16 HP
1691029 - 11 HP 1690936 - 16 HP 1690919 - 16 HP 1690912 - 11 HP 1690881 - 16 HP 1690853 - 16 HP 1690846 - 11 HP 1690810 - 16 HP 1690759 - 11 HP
1691479 - 12 HP 1691477 - 13 HP 1691475 - 16 HP 1691432 - 13 HP 1691276 - 12 HP 1691237 - 13 HP 1691236 - 13 HP 1691044 - 16 HP 1691043 - 16 HP
1691040 - 11 HP 1690960 - 16 HP 1690954 - 16 HP 1690947 - 11 HP 1690887 - 16 HP 1690875 - 16 HP 1690868 - 11 HP 1690763 - 11 HP
Section 9. Later Model Front-Cut Riders with Eaton Model 7 Hydrostatic....................................................... 31
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
FC Series Front-Cut 1300 Series Front-Cut 2300 Series
1692375 - 16 HP 1692311 - 16 HP 1692309 - 12.5 HP
1692014 - 12.5 HP 1691656 - 16 HP 1691655 - 12 HP
1692375 - 16 HP 1692312 - 16 HP 1692310 - 12.5 HP
1692022 - 12.5 HP 1691660 - 16 HP 1691659 - 12 HP
1692512 - 16 HP
Section 10. Early Model Front-Cut Riders with Eaton Model 7 Hydrostatic ...................................................32
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
SunRunner Series Vanguard Series
1691331 - 12 HP 1691336 - 12 HP
3
Table of Contents (Continued)
Section 11. Mid-Engine Riding Mowers with HydroGear 311 - 0500 ................................................................33
SIMPLICITY AGCO ALLIS MASSEY FERGUSON
Coronet Series 400 Series 2400 Series
1692750 - 13 HP 1692515 - 12.5 HP
1692385 - 12.5 HP 1692130 - 12.5 HP
1692821 - 13 HP 1692519 - 12.5 HP
Transmission Purging
This procedure applies to the following models: Simplicity - Regent & Coronet Series AGCO Allis - 500 & 400 Series Massey Ferguson - 2500 & 2400 Series
The following is a purging procedure for products that use the Hydro-Gear transmis­sion. Use this procedure if air has become trapped in the transmission during shipment, storage, or during an oil change. Purge the transmission if it lacks drive in forward or reverse.
1. Park the tractor on a flat, level surface.
2. Place the hydro release lever in the PUSH position by pulling rearward on the lever . The lever is located under the rear right-hand corner of the frame.
3. Start the tractor engine and run at low idle.
4. Move the ground speed control lever to the neutral gate.
5. Return the control lever to the neutral gate.
6. Place the hydro release lever (A) in the DRIVE position by pushing the lever fully forward.
7. Drive the tractor for at least five feet in forward and reverse directions with full throttle and full ground speed. Repeat this procedure three times in the forward and reverse directions.
Repeat the above steps if the tractor has noisy or erratic operation, lack of performance after transmission warm up, or oil leakage from transaxle vent tube.
1692399 - 12.5 HP 1692176 - 12.5 HP
1692491 - 12.5 HP
4
Introduction
■ This manual assumes all clutch and brake adjustments have been made, and that
transmission control linkages are in good serviceable condition.
■ Worn parts, broken or weak springs, fasteners, and bushings should be replaced as
necessary before attempting to make adjustments.
■ It is possible during adjustments to place yourself in a position which is more
hazardous than when the unit is in normal operation.
■ Safety is a matter of common sense . . . a matter of thinking before acting.
■ Familiarize yourself with the product and pay special attention to all safety warnings.
■ These adjustments are meant to minimize cr eep when controls are placed in the neutral
position.
■ Hydrostatic transmissions should never be relied upon to hold a tractor in a parked
position. The parking brake should be set and engine stopped whenever leaving the tractor.
NOTE: PUSHING THE TRACTOR BY HAND
1. Disengage the PTO and turn the engine off.
2. Move the transmission release lever to PUSH position. The tractor can now be pushed by hand. T owing the tractor with another vehicle is not recommended, as the transmission may be damaged.
WARNING
When making adjustment, keep hands, hair, clothing, and tools away from rotating belts. Careless or improper attention may result in serious injury.
5
Section 1.
Commercial Front-Cut Rider with Dual Eaton Model 7 Hydrostatic
Wheel-Steer Adjustments
Neutral
1. Make sure that the steering wheel is spring­centered in the straight-forward position. If spring pulls steering wheel off-center, loosen the nut securing the anchor bolt (G) and move bolt in slot until wheel is pointing straight ahead. Retighten nut and recheck steering wheel alignment.
2. Check the alignment of the rear edges of bars (I, figure 1-1) and transmission control shafts (C and D). Rear edges should be aligned as shown in figure 1-1. To adjust linkage, first loosen jamnuts (A), remove the nut securing the ball joint (H), and rotate ball joint until alignment is correct. Retighten all hardware.
3. Block frame so that wheels are off the ground. Increase the engine RPM level and move foot pedal forward and reverse several times. Spring tension should return foot pedal to neutral.
4. If wheels rotate in neutral, loosen nuts (B, figure 1-1) on each side of the hydro pump linkage (F). Turn either front or rear nut until wheel stops rotating.
5. Tighten nuts, making sure control rods do not change position. This may take several times to position rods at exact neutral.
6. Remove frame blocking and test operate. Rider should not move with foot pedal in neutral position.
Figure 1-1. A. Steering Linkage Adjustment Nuts B. Neutral Adjustment Nuts C. Left Hand Transmission Control Shaft D. Right Hand Transmission Control Shaft E. Steering Linkage F. Hydro Pump Linkage G. Spring-Centering Bolt H. Ball Joint I. Bar
Transmission Speed Variation
If rider pulls to one side with the steering wheel in a straight forward position, the hydro pump linkage can be adjusted to correct for unequal pump output. This adjustment limits the output of a faster hydro pump at less than maximum forward speed. Refer to “Forward Travel Stop Adjustment” for maximum forward speed adjustment.
To adjust hydro pump linkage (A, figure 1-2), loosen retaining hardware and move linkage upward in slot (B) to reduce hydro pump output. Retighten flange locknut (C) after adjustment is complete.
Figure 1-2. A. Hydro Pump Linkage B. Adjustment Slot C. Flange Locknut
6
Section 1. (Continued)
Commercial Front-Cut Rider with Dual Eaton Model 7 Hydrostatic
Ground Speed Control
The position and angle of the foot pedal (A, figure 1-3) can be adjusted by loosening taptite screw (B) and moving pedal in slot. This adjustment should not affect rider speed or neutral adjustment.
Figure 1-3. A. Foot Pedal B. Adjustment Capscrew
Lever-Steer Adjustments
Control Levers
The control levers have slotted holes for mounting and can be positioned for the most comfortable operating position. When in neutral, the handles should be opposite each other.
To adjust the angle of lever, loosen capscrew (A, figure 1-4). Adjust lever position and retighten capscrew. Neutral gate brackets (B) must be adjusted so that new position of lever will be aligned with neutral gate (C) when rider is in neutral.
In the operating position, handles should have about 1/2" between them so they will not contact each other with the weight of the operator’s hands on handles. To adjust distance, loosen locknut and turn adjusting bolt (D) in or out. Retighten nut after adjustment.
After handle adjustment, check the neutral adjust­ment to make sure there is no creep with levers in neutral position. Readjust spring-centered lever position. (Refer to following adjustments.)
Figure 1-4. A. Capscrew B. Brackets C. Neutral Gate D. Adjustment Bolt
7
Section 1. (Continued)
Commercial Front-Cut Rider with Dual Eaton Model 7 Hydrostatic
Neutral
Exact neutral position of transmission control linkage (A, figure 1-5) can be adjusted by changing position of linkage on frame bracket (B). With control levers in neutral position, wheels should not turn in forward or reverse direction. To adjust neutral:
1. Block frame up so both drive wheels are off the ground.
2. Place weight in operator’s seat to start engine.
3. With control levers in neutral gate, start engine and leave in fast throttle position. If either wheel turns in forward or reverse direction, perform steps 4 and 5.
4. Loosen capscrew (C) and nut securing transmis­sion control linkage (A). Move linkage forward or backwards until wheel stops moving.
5. Retighten hardware, making sure wheel does not rotate after hardware is tightened. Repeat steps for opposite wheel if necessary.
6. Shut engine off and remove weight from seat. Lower rider to the ground.
Figure 1-5. A. Transmission Control Linkage C. Capscrew B. Frame Bracket
Spring-Centered Lever
Control levers should be adjusted so that levers automatically return to neutral position when released. Before performing adjustment, make sure “Control Lever Adjustment” and “Neutral Adjust­ment” have been performed.
1. Block frame up so both drive wheels are off the ground.
2. Place weight in operator’s seat to start engine. Do not start engine.
3. Make sure that “Control Lever Adjustments” and “Neutral Adjustment” are correct (refer to preceding adjustments).
4. Loosen spring tension completely on friction pad (refer to following adjustment).
5. Loosen nut (A, figure 1-6) on top of turnbuckle (B) and adjust turnbuckle up or down.
WARNING
Do not adjust turnbuckle with engine running. Hydro pump fan is too close to turnbuckle to safely perform adjustment.
6. Restart engine and check control lever position. Move control lever forward and backward and check if lever returns to neutral position and wheel does not rotate. If wheel rotates forward, turnbuckle assembly must be lengthened (turn­buckle will move down). If wheels rotate back­wards, turnbuckle assembly must be shortened (turnbuckle will move up).
Figure 1-6. A. Nut D. Stationary Spring B. Turnbuckle E. Friction Pad C. Tension Spring
7. Repeat turnbuckle adjustment until control lever auto­matically returns to neutral position. Tighten nut (A) when adjustment is correct.
8. Tighten spring tension on friction pad (refer to following adjustment).
9. Remove weight from seat and lower rider to the ground.
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