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GB - 25
Wheel Drive Traction Adjustment
The gap (clearance) between the drive rollers
and tires, when wheel drive is disengaged, is
used to set the amount of contact force
(traction) when wheel drive is engaged. Drive
roller to wheel gap should be 1/8" – 1/4"
(3mm – 6mm).
NOTE: A smaller gap between rollers and
tires when wheel drive is disengaged
provides for more engaged traction, which is
helpful on sloped terrain.
On each side of the mower, the lower end of
the wheel drive frame pivots from an
adjustment plate (See Figure 28). The upper
right side of the frame is connected by a link
to the end of the engage plate. The opposite
end of the engage plate pivots from the bell
crank post. See Figure 26.
NOTE: A series of holes in the engage plate
allow traction adjustments to correspond to
rear wheel height (cutting height) settings.
1. Remove both the upper and lower
guards. See WHEEL DRIVE
ADJUSTMENTS Drive Belt Guard on
page 23.
2. Turn fine adjustment knob
counterclockwise to bring it to the top
end of adjustment link. Do not remove
knob.
3. Remove hairpin and washer from bell
crank post.
4. Remove engage plate from bell crank
post where engage plate is mounted.
5. Push the wheel drive frame back until
drive roller gap at wheels is 1/8" – 1/4"
(3mm – 6mm). See Figure 27.
6. Install nearest hole of engage plate onto
bell crank post. See Figure 26.
7. Install hairpin and washer on bell crank
post.
8. Turn fine adjustment knob clockwise to
adjust drive roller gap at wheels to be
1/8" – 1/4" (3mm – 6mm). See
Figure 27.
9. Install both the upper and lower guards.
See WHEEL DRIVE ADJUSTMENTS
Drive Belt Guard on page 23.