Service Manual

CHASSIS
4 - 4 Mid-Size Walk Behind Service Manual
5. Release the brake and move the neutral/brake
lock to the neutral position. Move the machine
lightly, approximately 1/2 in. (13mm). Wheels
should rotate freely.
6. If both conditions are met, no adjustment is
required.
Adjusting the Brakes
The brake lever is on the upper control bar (Figure 31).
If the parking brake does not hold securely, an
adjustment is required.
Note: For the initial adjustment, adjust the wing nut
until it is 1-1/4 inches (32mm) from the top of the rod
(Figure 30).
1. Park the machine on a level surface, disengage
the PTO, and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Check the brake before you adjust it; refer to
”Checking the Brake" on page 4 - 3.
4. Release the parking brake; refer to ”Releasing the
Parking Brake" on page 4 - 4.
5. To adjust the brake remove the hair pin cotter and
washer from the bell crank and trunnion (Figure
30).
6. Rotate the wing nut clockwise to increase the
braking pressure.
7. Rotate the wing nut counterclockwise to decrease
the braking pressure.
8. Install the trunnion into the hole for the brake rod
(Figure 30). Tighten the wing nut.
9. Secure trunnion to brake lever with washer and
hair pin cotter (Figure 30).
10. Check the brake operation again refer to
”Checking the Brake" on page 4 - 3.
Figure 30
m-5372
Releasing the Parking Brake
1. Squeeze the drive levers back to the grip (Figure
31).
2. Place thumbs on the upper part of locks and rotate
them rearward until in forward speed slot (Figure
31).
Figure 31
m-6580
(1) Brake rod (2) Wing nut
(1) Handle
(2) Neutral/parking brake
lock
(3) Park position
(4) Neutral position
(5) Drive lever
(6) Full speed forward
position
(7) Grip
(8) Forward speed slot