Parking Brake Adjustment; Neutral Adjustment - Yard-Man 624 Operator's Manual

Loosen the jam nut found to the rear of the yoke,
threaded onto the control cable. See Figure 15.
Remove the hairpin clip securing the yoke to the
transmission and slide the clevis pin out of the
yoke. See Figure 15. Save both pins as they will be
reinstalled in later steps.
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Jam Nut
Adjustment Yoke
Figure 16
If the tractor is drifting slightly to the RIGHT, rotate the
yoke 180 ° (½ turn) clockwise.
If the tractor is drifting slightly to the LEFT, rotate the
yoke 180 ° (½ turn) counter-clockwise.
Reinsert the clevis pin removed early and secure it
with a replacement hairpin clip.
Retighten the jam nut against the adjustment yoke.
Test drive the tractor to see if there is a significant
improvement. If there isn't, contact an authorized
MTD Service Dealer in your area to have the
transmissions '_ine-tune" adjusted.
Parking BrakeAdjustment
Brakes are subject to wear during normal use and
should be checked periodically for adjustment. To
determine if the parking brake is in need of adjustment:
Engage the parking brake.
Open both transmission bypass valves as
instructed on page 18 before attempting to push the
tractor forward.
NOTE:
There will be some resistance from the
transmissions even when the bypass valves are open.
If the tractor can roll relatively freely, adjust the parking
brake as follows:
WARNING: Never attempt to adjust the
brakes while the engine is running. Always
turn off blades!PTO, move both control
handles into neutral position, stop engine and
remove key before dismounting.
Move the tractor to a smooth, flat surface.
Chock the left, rear tire and place the parking brake
lever in the disengaged position.
Remove the hubcap from the right, rear wheel.
Loosen, but do NOT remove, the hex screw which
secures the wheel assembly to the transmission.
Jack the tractor up off the ground and stabilize the
dght, rear portion of it with a jackstand.
Unthread the hex screw loosened eadier and
remove the wheel assembly from the tractor's
transmission.
Locate the cotter pin which secures a castle nut to
the transmission's brake arm. See Figure 17.
0 0 Castle Nut
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Right-hand Brake Arm
Transmission
Figure 17
Carefully remove and discard the cotter pin.
Tighten the castle nut 11 inch-pounds, or until the
brake arm has minimal up-and-down movement
when you attempt by hand to pivot it.
Back the castle nut off 1/3 turn before inserting a
new cotter pin (Part 714-0507) to secure it in place.
Remount the tractor's wheel assembly and repeat
the previous steps on the left side of the tractor.
IMPORTANT: Be certain to torque the hex screw which
secures the wheel assembly to the transmission to
between 25 foot-pounds and 42 foot-pounds.
Re-engage the parking brake and test it by
attempting to push the tractor forward.
If the tractor's parking brake should need further
adjustment, see an authorized MTD service dealer.
NeutralAdjustment
If the tractor's control handles do NOT return to the
neutral (STOP) position upon releasing them, the
handles are in need of adjustment. Do not operate the
tractor. Contact an authorized MTD Service Dealer in
your area to have the control handles properly
adjusted.
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