MTD 770 Operator's Manual page 19

If the tractor does not come to a complete stop when
the brake pedal is completely depressed, or if the
tractor's rear wheels can roll with the parking brake
applied, the brake is in need of adjustment. The brake
disc can be found on the right side of the transmission
in the rear of the tractor. Adjust if necessary as follows:
• Looking at the transmission from the right side of
the tractor, locate the compression spring and
brake disc. See Figure 14.
Hex Nut
Brake
Puck
Brake Disc
Figure 14
• Loosen, but do NOT remove, the hex nut found on
the right side of the brake assembly. See Figure 14.
• Re-tighten the hex nut, allowing a gap of .011"
between the brake disc and the brake puck. Use a
feeler gauge to achieve a precise measurement.
Standard Adjustment Seat
To adjust the position of the seat, loosen the two hex
screws on the bottom of the seat. See Figure 15. Slide
the seat forward or backward as desired. Retighten the
two screws.
Quick Adjustment Seat
To adjust the position of the seat, move the seat
adjustment lever (located under the seat) to the left and
slide the seat forward or backwards. See Figure 17.
Make sure seat is locked into one of the six adjustment
positions before operating the lawn tractor.
Knob Adjustment Seat
To adjust the position of the seat, loosen the two knobs
on the bottom of the seat. See Figure 16. Slide the seat
forward or backward as desired. Retighten the two
knobs.
Compression Spring
Transmission
(if so equipped)
(if so equipped)
Hex Screws
Knobs
19
Figure 15
Figure 16
Figure 17