Yard-Man 978Q Operator's Manual page 12

21" self-propelled mower
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HandleHeight
Your mower is shipped with the handle in the higher
height position. To lower the height, proceed as follows:
Remove the starter rope from the rope guide.
Remove the wing nuts and carriage bolts securing
the upper handle. Remove and lay the upper
handle out of the way, being careful not to bend or
kink the cables.
Remove the hairpin clips from the weld pins on the
handle brackets and remove the wing nuts and
carriage bolts from the upper hole on the handle
mounting bracket.
Press out on the legs of the lower handle and
remove lower handle from the mower.
Turn lower handle around so the notch on the
bottom of the lower handle is facing forward.
See Figure 13.
Lower Handle
Notch
Figure 13
Reassemble the handles, placing the bottom holes
in the handle over the weld pins in the handle
mounting bracket.
Place the hairpin clips in the inner holes in the weld
pins and insert the carriage bolts through the upper
hole on the handle mounting bracket and secure
with plastic wing nuts.
Reassemble the upper handle to the lower handle.
Attach the starter rope as instructed on page 8.
DriveClutchControl
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 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 14.
Bottom View
Adjustment
Wheel_.
Handle
Shift Lever
D
Clutch
Control
Figure 14
NOTE: For some people, the drive clutch control may
not be in a comfortable position.
You can adjust the
handle out by tightening the adjustment wheel.
Shift LeverCable
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 15.
Adjustable Cable
Bracket
Hex Nut
PUSH
Figure 15
Start engine and place shift lever in the sixth speed
position. Refer to Figure 14.
Stop engine and disconnect spark plug wire and
ground it against engine.
Loosen hex nut which secures the adjustable cable
bracket. See Figure 15.
Push back on the adjustable cable bracket and
tighten hex nut.
EngineAdjustments
Refer to the engine manual for these adjustments.
12

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