Gravely 996122 Owner's/Operator's Manual page 33

The spark arrester is mounted on the end of the muffler tail
pipe and is designed to suppress sparks from escaping the
muffler while they are still glowing.
Spark Arrester Maintenance Schedule
• Inspect every 100 hours for carbon build-up and
screen damage.
• Clean whenever carbon build-up is visible or whenever
lost of engine power is detected.
• Replace when damaged.
Spark Arrester Maintenance Procedure
1. Remove spark arrester mounting screw (#1) and
remove spark arrester (#2) from muffler exhaust pipe.
2. Remove carbon deposits from both sides of spark
arrester screen with a wire bristle brush. Be careful not
to damage spark arrester screen.
3. Inspect spark arrester for holes or breaks in the screen
and replace if damaged.
4. Reattach spark arrester to muffler with mounting
screw.
Spark Arrester
Muffler
Spark
Arrester
Screen
Figure 28
Park Brake Adjustment
The Park Brake Assembly is factory shimmed to the correct
gap and should not require adjusting. Make adjustments
only if park brake pads do not hold when shift selector is in
park or if brake pads drag on the disc when out of park.
Have your nearest Gravely Service Center replace brake
pads and/or shims if the following adjustments are not
satisfactory.
Refer to Figure 29:
The park brake caliper is located on the right side of the rear
trans-axle case.
IMPORTANT: If the park brake lever is not properly
adjusted, the brake pads can drag resulting in excessive
brake wear and decreased engine power. When adjusted
properly, the park brake lever (#4) will be located in its ball
detent position when shift selector is in neutral.
IMPORTANT: Make certain the wheels are chocked and the
cargo box is securely supported in the up position before
working on the Park Brake calipers.
1. Park vehicle on a level surface. Don't work under or
around a vehicle parked on an incline.
2. Set shift selector in park.
3. Chock front and back of rear wheels.
4. Secure cargo box in the up position.
5. Change shift selector to neutral.
6. Turn ignition switch off and remove switch key.
7. Remove cotter pin (#1) and linchpin (#2).
8. Loosen jam nut (#3).
9. Allow park brake lever (#4) to seat itself in the ball
detents.
10. Adjust yoke (#7) in or out until yoke linchpin hole aligns
with brake lever (#4) linchpin hole.
11. Reinsert linchpin (#2).
12. Insert cotter pin (#1) and secure in place by bending
one leg out.
13. Tighten jam nut (#3) against yoke (#7).
14. Check park brake's ability to hold and release by:
a. Placing shift selector in park and check to make sure
brake pads (#5) are seated tight against rotary disc
24706
(#6). The vehicle should not move with shift selector
in this position.
b. Return shift selector to neutral and check to make
sure park brake pads (#5) do not make contact with
rotary disc (#6).
c. If park brake still does not work properly, have your
nearest Gravely service center inspect the brakes
before continuing to use the vehicle.
15. Set shift selector in park, lower cargo box and remove
wheel chocks.
GB - 33