MTD YARD-MAN 999 Operator's Manual page 13

21-inch, 6-speed lawn mower
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Handle Height
Your mower is shipped with the handle in the higher
height position.To lower the handle height for your
convenience, proceed as follows.
Lower
Handle
Figure 17
Remove the starter rope from the rope guide.
Remove the upper handle by removing the hand
knobs and carriage bolts. Lay the upper handle out
of the way, being careful not to bend or kink cables.
Remove the hairpin clips from the weld pins on the
handle brackets.
Remove carriage bolts and wing nuts from the two
handle brackets on both sides. Press outward on
the legs of the lower handle, and remove it from the
mower.
Turn the lower handle around so the notches on the
bottom of the lower handle are facing forward as
shown in Figure 17.
Reassemble, placing the bottom holes in the
handle over the weld pins in the handle mounting
bracket.
Reassemble the upper handle.
Place the hairpin clips in the inner holes in the weld
pins. Secure carriage bolts and wing nuts on the
handle brackets. Reattach the starter rope.
Drive Clutch Control
The drive clutch control 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 any of the following happens:
1. The mower does not propel itself with the drive
clutch engaged.
2. The mower's drive wheels hesitate with the drive
clutch engaged.
To resolve the above problems, rotate the
adjustment wheel with your fingers: clockwise to
tighten the cable and counter-clockwise to loosen
the cable. See Figure 18.
Notch
NOTE: For some operators, the drive clutch handle
may not be in a comfortable position. If so, you can
adjust the handle by tightening the adjustment wheel.
Shift Lever Cable
Periodic adjustment of the six-speed shift cable may be
required 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. Follow steps below to
adjust the shift lever.
Start the engine and place speed control lever in
the sixth speed position.
Stop the engine; disconnect spark plug wire and
ground it.
Loosen hex nut (A) which secures the adjustable
cable bracket. This bracket is located on the left
side (towards the center) of the cutting deck. See
Figure 19 for location of the bracket.
Push back on the adjustable cable bracket. See
Figure 19 inset.
After adjusting as required, tighten hex nut (A).
13
Bottom View
Adjustment
Wheel
Figure 18
Adjustable Cable Bracket
Hex Nut (A)
Figure 19
PUSH

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Yard-man e999

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