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21
the seat switch, the blade clutch switch and
the electric blade clutch. Then check out
the seat switch, the blade clutch switch and
finally the electric blade clutch.
D.Tires
The two front wheels are caster wheels that are free
to swivel to accommodate the direction of the Mower.
The two rear wheels are used to propel the Mower in
the direction of input from the drive handles. Inflation
pressure of the rear tires is important for stability
while the Mower is in operation. If the tire diameter is
not equal between the two tires, the Mower will pull to
one side.
1.
Inflation Pressure:
a. Traction Tires—20 psi max; 8-10 psi rec-
ommended
b. Front Caster Wheel—40 psi max; 20-25
psi recommended
c. Cutting Deck Ball Wheels—Solid Polyure-
thane.
Use the Following guidelines for maintaining the tires:
a. Balance inflation pressure between the
rear tires to help maintain straight travel
(see tire side wall for proper inflation pres
-
sure).
b. Keep the valve caps tightened to prevent
air pressure loss.
2.
Leaking Tires:
When a flat tire occurs, repair
or replace immediately. The normal procedure
is to remove the wheel and replace it with a
spare. Take the leaking tire to a maintenance
area and repair. If a tire is getting soft, park
the mower on the nearest level, paved area. If
the leaking tire is on a traction wheel, put
blocks on each side of the opposite traction
wheel and jack up the tire that leaks about an
inch off the ground. Loosen and remove the
lug nuts and remove the wheel. Mount a
spare wheel and tire, replace the lug nuts, and
using a torque wrench, tighten them to 60
±
10 ft-lbs.
If the leaking tire is on a front caster wheel,
block both traction wheels and raise the
caster wheel so that the tire is an inch off the
ground. Loosen and remove the locknut from
the axle assembly and pull the axle assembly
from the caster yoke. The wheel and two
spacer sleeves will drop free. Slip the axle
assembly through one side of the caster
yoke, through a spacer sleeve, a spare
wheel, the other spacer sleeve and finally
through the other side of the caster yoke.
Then tighten the locknut on the end of the
axle assembly.
Lower the mower off the jack and continue
mowing. The wheel with the leaking tire
should be taken to the maintenance area, the
tire inflated to 20 psi and the wheel placed in
a large bucket of water. Carefully inspect the
tire, rim and valve for escaping air bubbles
which indicate a leak. Mark each leak with a
yellow marking crayon and then deflate the
tire to 8 psi and repeat the inspection. If the
leaks you find are pin hole size to 1/16"
diameter, the tire can be repaired using an
aerosol can of tire inflater and latex sealer
available from any auto supply store. Follow
the directions on the can. If the leaks are
larger than 1/16" diameter, the tire can be
repaired with rubber plugs also available in a
kit from any auto supply store. If the tire bead
is damaged, a tube will have to be installed in
the tire or the tire will have to be replaced.
3.
Creeping:
Creeping is the slight forward or
backward movement of the mower when the
throttle is on and the lapbars are in the
opened-out position. If your mower creeps do
the following.
a. Jack up rear of unit.
b. Place Lapbars in neutral opened-out posi-
tion.
c. Locate jam nuts (ref no. 23 in the control
assembly parts list). See Illustrated Parts
Book.
d. Loosen jam nuts on both ends of rod con-
nectors. (ONLY if mower creeps.)
e. Start unit and push throttle all the way on.
f. Locate the left and right rod connectors
between each jam nut. See Control
assembly in the Illustrated Parts Book.
g. If unit creeps forward rotate counter-clock-
wise. And if unit creeps in reverse, rotate
clockwise.
Adjust the appropriate rod connector. The
left rod for the left side of the mower and
the right rod for the right side of mower.
Afterward, retighten jam nuts.
E. Brakes
While the mower is in motion, all braking is performed
dynamically through the hydraulic pumps and traction
motors, controlled by the two steering levers. When the
mower is parked with the engine shut off, the hydraulic
system locks the traction wheels.