Troy-Bilt 12A-998Q766, Operator'S Manual

Page: 12 / 24

12
Cutting Height
Your mower is shipped with the cutting height in the
lowest position. To adjust the rear cutting height,
proceed as follows:
• Pull the rear height adjustment lever out and away
from the mower and then move it forward or
backward to another slot. For rough or uneven
lawns, move the height adjustment lever to a higher
position. This will help stop scalping. See Figure 13.
Figure 13
The front wheel cutting height is determined by
selecting one of six positions on each caster assembly.
To adjust front cutting height, proceed as follows:
• Remove the wing nut from the axle bolt. See Figure
14. Slide the axle bolt and wave washer from the
assembly and select a cutting height.
• With the wave washer on the axle bolt, reinsert
hardware in the square hole desired through the
wheel assembly and secure with the wing nut
previously removed.
IMPORTANT:
All wheels must be placed in the same
relative position. For rough or uneven lawns, raise the
cutting height of your mower.
Figure 14
Caster Lock Adjustment
The casters can be locked in a straight ahead position
or position to swivel freely. See Figure 14.
• Lift and place the lock pins in the larger holes to
lock the wheels for straight ahead operation.
• Place pins in smaller holes to allow casters to rotate
freely for turning.
Drive Clutch Control
The adjustment wheel is located in the drive clutch
control handle housing and is used to tighten or loosen
the drive belt. You will have to adjust the drive clutch
control if, with the drive clutch engaged, the mower
either does not self-propel or hesitate.
• To resolve the above problems, rotate the
adjustment wheel with your fingers clockwise to
tighten the cable or counter-clockwise to loosen the
cable. See Figure 15.
NOTE: For some operators, the drive clutch control
may not be in a comfortable position. You can adjust
the handle out by tightening the adjustment wheel.
Figure 15
Shift Lever Cable
Periodic adjustment of the six speed shift cable may be
necessary due to normal wear on the cable. Adjustment
is needed if all six speeds do not work.
The adjustable cable bracket is located on the left side
of the mower beside the engine. See Figure 16.
Figure 16
Left Rear Wheel
Rear Height
Adjuster Lever
Wing Nut
Axle Bolt,
Wave
Washer
Square Hole
(indicates
various cutting
heights)
Front
Wheel
Front
Wheel
Caster
Lock
Pin
Caster
Lock
Pin
Adjustment
Bottom View
Wheel
Drive Clutch
Control
Upper
Handle
Shift Lever
Hex Nut
Adjustable Cable
PUSH
Bracket