6-6 4222983 Second Edition
CUTTING UNITS
6
Washboarding
NOTE: Arrow indicates direction of travel.
Washboarding is a cyclical pattern of varying cutting
heights, resulting in a wave-like cut appearance. In most
cases, the wave tip-to-tip distance is approximately
6–8 in. (15–20 cm). Color variation (light-to-dark) may
also be noticed.
This condition is usually caused by a rocking motion in
the cutting unit(s). This condition is found mostly on
mowers with multiple (suspended) cutting units.
Washboarding may also be caused by variations in the
turf.
Probable Cause Remedy
Mowing (ground) speed is too fast. Reduce mowing (ground) speed.
Grass build-up on roller. Clean the roller and scraper.
Roller is out of round. Replace roller. (See “Front Roller” on page 6-31 or “Rear Roller” on
page 6-32.)
Mowing in the same direction. Change mowing direction regularly.
Use of a groomer on cleanup pass. Groomers should be used only in a straight line.
Reel drive motor performance is reduced. Check operation of reel motor(s) and repair/replace as necessary.
TN0159
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