Simplicity Regent Series Repair Information page 17

Section 4.
Tractors with Tuff Torq K215-A & HydroGear (Sundstrand) Hydrostatic, BDU-21L
Neutral Adjustment (Early Model Only)
1. Park tractor on level surface. Shut off electric
clutch switch and engine. Do not apply parking
brake. Make sure transmission control lever is in
neutral and the hydro release valve is in the
"DRIVE" position.
2. Raise rear of tractor off ground with a suitable
hoist or floor jack. Remove the right-hand rear
wheel. Install safety jackstand underneath right-
hand footrest and block front wheels. Lower the
tractor until the left-hand tire is on the ground.
3. Loosen nut securing shift rod (A, figure 4-1) at
top of speed control lever (B).
4. Loosen nut securing bottom of speed control
lever (C) to support bracket.
5. Loosen nut (D) securing ball retainer (E) to
support bracket.
6. Start engine and run at full throttle.
7. Rotate ball retainer (E) until drive hub rotates in a
clockwise (forward) direction. Turn the ball
retainer back until the drive hub stops rotating.
Ball retainer can be rotated with a pliers or use a
1/4" rod or #2 Phillips screwdriver into hole in
ball retainer.
8. Tighten nut (D) securing ball retainer (E).
9. Depress clutch/brake pedal fully and apply
parking brake. Turn the tractor engine off.
10. Tighten both nuts securing the top and bottom of
the speed control lever (B & C).
11. Release the parking brake and restart the engine.
Run the engine at full throttle and check for drive
hub rotation.
a. Wheel hub (F) may rotate in a counterclock-
wise (reverse) direction due to internal relief
valve. If hub can be held by hand to stop
rotation, adjustment is satisfactory. If hub
cannot be held by hand, loosen the nut (D) and
adjust ball retainer (E) until hub rotation stops.
Retighten nut (D) and recheck for hub rotation.
b. If wheel hub rotates in a clockwise (forward)
direction, loosen the nut (D) and adjust ball
retainer (E) until hub rotation stops. Retighten
nut (D) and recheck for hub rotation.
12. When adjustment is correct, stop the tractor
engine and reinstall the rear wheel. Remove the
tractor from the jackstands.
Figure 4-1.
A. Shift Rod
B. Speed Control Lever (Top)
C. Speed Control Lever (Bottom)
D. Nut
E. Ball Retainer
F. Wheel Hub
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