18
Section 4 - ADJUSTMENTS & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance,
service or repairs with the engine running. Stop
engine. Stop blade. Engage parking brake. Remove
key. Remove spark plug wire from spark plug and
secure away from plug. Engine and components are
HOT. Avoid serious burns, allow all parts to cool
before working on machine. Fuel Filler Cap and Vent
must be closed securely to prevent fuel spillage.
4.1 MOTION CONTROL ADJUSTMENTS
4.1.1. Neutral Adjustments
When the machine is on a flat level surface and motion
control levers are in their neutral or neutral lock
positions, there should be no machine movement. If
movement is present, adjustment must be made to left
and/or right transmission control rods (located to the left
and right of the operator seat, under the control panels):
1.
Remove the hair pin and washer securing the
rod fitting to the Motion Control Lever pivot bracket.
See Figure 4.1. Pull fitting end out from bracket.
2.
Turn fitting clockwise one turn if machine moves
in reverse, or counterclockwise if machine moves
forward.
3.
Replace fitting into hole, securing with washer
and hair pin.
4.
Start the machine. With motion control levers
left in their neutral lock positions, disengage the
parking brake and check for movement. If
movement is still present, repeat steps 1-4 until
movement ceases.
5.
Repeat for other side if needed.
FIGURE 4.1
(Right side shown; fuel tank removed for clarity)
4.1.2. Neutral Return Spring Adjustments
When the motion control levers are released, return
springs assist them back to the neutral position. See
Figure 4.1a. To adjust spring tension:
1.
If a stronger return is desired, tighten the nyloc
nut atop the return spring rod.
2.
If a weaker return is desired, loosen the nyloc
nut atop the return spring rod.
NOTE:
Be sure to adjust left and right return
springs equally.
FIGURE 4.1a
4.1.4. Motion Control Lever Alignment
Correctly aligned Motion control levers will propel the
mower forward in a straight line when levers are equally
engaged into drive. See Figure 4.1b. If one
transmission engages before another, loosen the lever
adjustment screws, and adjust the lever forward or
backward until levers are aligned. See Figure 4.1c.
FIGURE 4.1b
4.1.3. Tracking Adjustments
When both motion control levers are fully engaged in
forward drive, the machine should move in a straight
line. If the machine tracks (veers) left or right, a tracking
adjustment must be made. Each motion control lever is
equipped with a tracking adjustment plate. See Figure
4.1b. Moving the plate forward or backward adjusts the
machine’s tracking:
1.
If mower tracks to the left, loosen the two torx
screws on the left adjustment plate, slide plate
forward approximately 1/8”, and retighten screws.
(If plate is already as far forward as it can go,
loosen the right plate and slide back 1/8”.) Check
machine tracking and repeat as needed.
2.
If mower tracks to the right, loosen the two torx
screws on the right adjustment plate, slide plate
forward approximately 1/8”, and retighten screws.
(If plate is already as far forward as it can go,
loosen the left plate and slide back 1/8”.) Check
machine tracking and repeat as needed.
TURN CLOCKWISE IF WHEEL
TURNS IN REVERSE,
COUNTERCLOCKWISE IF
WHEEL TURNS FORWARD
PIVOT BRACKET (LEVER
MUST BE IN NEUTRAL
LOCK POSITION)
CONTROL
ROD
ROD
FITTING
HAIR PIN
TENSION
ADJUSTING
NUT
NEUTRAL
RETURN
SPRINGS
=
=
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