Gravely Pro-Walk Hydro 36HR PS Owner's/Operator's Manual page 28

I
Controls
Assembly
Plate
Figure 17
10. Start engine.
11. Run engine at full throttle.
NOTICE: See Figure 16 for steps 12 though
18.
12. Move actuation bracket (C) to position
where corresponding rear wheel does
not turn. The drive pump is now in
neutral.
13. Shut off engine.
IMPORTANT: Once neutral is found, DO
NOT move position of pump actuation
bracket.
14. Rotate clevis (E) on lower end of
steering control rod (F) to adjust its
length. Clevis holes must align with
mounting hole in pump actuation bracket
(C).
15. Install bolt (H) through clevis (E) and
pump actuation bracket (C).
16. Install jam nuts (G) on bolt (H).
17. Tighten jam nut (D) against clevis (E) to
secure length of steering control rod.
18. Connect return spring (A) to anchor bolt
(B) on pump actuation bracket (C).
19. Repeat steps 10 through 18 to adjust
opposite side steering control rod.
Controls Assembly
Mounting
Hardware
Side
Plate
CUTTING HEIGHT ADJUSTMENT
WARNING: ALWAYS block wheels,
engage parking brake and know all
jack stands are strong, secure and
will hold weight of unit during
maintenance.
Cutting height can be adjusted from 1-1/2 –
4-1/2 in. (38 – 114 mm) using the height of cut
(HOC) rods and washers supplied with the
unit. See Figure 18.
NOTICE: If necessary, up to an additional 3/4
in. (19 mm) of cutting height can be obtained.
See ADDITIONAL CUTTING HEIGHT on
page 30.
Holes in the height of cut (HOC) rods are
used to adjust the cut height. The holes are
spaced at 1/2 in. (12 mm) increments. In
addition, spacers are added or removed to
allow cut height adjustments in 1/4 in. (6 mm)
increments.
Grab handles (A) for adjusting height are
located on both sides of the deck. Washers
(E) are mounted on the HOC rods (C)
between the frame (F) and hair pin (D) to
prevent frame wear. See Figure 19.
NOTICE: Plastic bushings are located in the
frame (F) where the front HOC rods (C)
mount. The front HOC rods are larger in
diameter than the rear rods. Washers (E)
and spacers (B) are sized to match HOC
rods.
HOC spacers (B) are stored on the frame (F)
above the deck, under the belt cover. To use,
remove hex bolts (G) retaining HOC spacers
and remove spacers. Replace hex bolts to
storage position.
EN - 28
Figure 18