Walker S18 User Manual

75
Maintenance Instructions ADJUSTMENTS
WARNING
The following adjustments are made with
the engine running. Keep all body parts
and tools away from rotating and hot
components, and secure all loose cloth-
ing.
4. With the body lowered and the FSC in NEU-
TRAL-PARK, start the engine. With the engine
at normal operating speed, check for movement
of the drive wheels.
5. Using a wrench on one tracking adjustment
nut, rotate the control rod counterclockwise
just until the wheel on that side begins to move
forward. Then, counting the turns required, ro-
tate the control rod clockwise just until the
wheel stops and then begins to move in re-
verse. Rotate the control rod back counter-
clockwise half the number of turns required to
make the wheel go from moving forward to re-
verse. The transmission is now centered in the
neutral window. Tighten the jam nut on the ball
joint and repeat the same procedure on the
other transmission.
6. Turn o󰀨 the engine, and then lower the drive
tires onto the ground.
NOTE: It may be necessary to tighten the FSC
friction adjustment if the transmissions are
moved out of neutral when the body is raised.
Refer to Step 7 - Forward Speed Control Friction
Adjustment later in this section for location of
the FSC friction adjustment nut.
Step 4 - Full Forward Speed Adjustment
1. Move the FSC to the full FORWARD speed
position.
2. Raise the body. The maximum speed tracking
adjustment set screw in both transmission
control arms should not be contacting the limit
stud on the transaxle. If they are, back the set
screws out until they do not touch.
Transmission
Control Arm
T-Handle
Hex Wrench
Maximum
Speed Tracking
Adjustment
Maximum Speed Tracking Adjustment
(Shown with Parts Removed for Clarity)
Step 5 - Straight Tracking Adjustment
1. Sit in the seat, start the engine, set throttle at full
speed, and with the FSC in the NEUTRAL-
PARK po sition check for movement of either
drive wheel (if either wheel moves backward or
forward, re fer to Step 3 - Neutral Function
Adjustment and readjust).
2. Check for straight ground tracking on a level
surface (with hands o󰀨 the steering levers). Set
the FSC at several di󰀨erent speeds and observe
if the machine moves in a straight line (use
cement joint or other line on ground for refer-
ence).
3. If tracking is not straight, shorten the control rod
on the faster side by turning the tracking adjust-
ment nut clockwise. If straight tracking and
neutral are both achieved proceed to the next
step. If straight tracking and neutral cannot
both be achieved, turn the tracking adjustment
nut on the faster side counterclockwise until
neutral is restored.
4. Lengthen the control rod on the slower side by
turning the tracking adjustment nut counter-
clockwise until straight tracking and neutral are
both achieved.
IMPORTANT: After tracking adjustments are
complete, conrm that there is at least one (1)
thread visible on both control rods past the
tracking adjustment nuts.

Walker S18 Specifications

General

Drive System	Hydrostatic
Cutting Height	1.5 - 4.5 inches
Engine	Kohler
Cutting Width	48 inches
Transmission	Hydrostatic