Quality Of Cut; Quality Of Cut Troubleshooting; Washboarding - Jacobsen AR522 Handbuch

10

QUALITY OF CUT

10 QUALITY OF CUT

10.1 QUALITY OF CUT TROUBLESHOOTING _______________________________________

It is recommended that a "test cut" be performed to
evaluate the mower's performance before beginning
repairs.
An area should be available where "test cuts" can be
made. This area should provide known and consistent
turf conditions to allow accurate evaluation of the
mower's performance.
Another "test cut" should be performed after the
completion of the repairs and/or adjustments to verify the
mower's performance.

10.2 WASHBOARDING _________________________________________________________

NOTE: Arrow indicates direction of travel.
Probable Cause
Mowing (ground) speed is too fast.
Grass build-up on roller.
Roller is out of round.
Mowing in the same direction.
Cutting units have too much or too little weight on them.
Insufficient engine speed, not set to specification.
Hydraulic system and/or rotary drive motor performance is
reduced.
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Before performing a "test cut" to diagnose cut
appearance and mower performance, the following items
should be verified to ensure an accurate "test cut."
1. Mowing (Ground) Speed
2. Blade Sharpness
3. Height-of-Cut (HOC)
4. Roller and Roller Bearing Condition
5. Blade Speed
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.
TN0159
Reduce mowing (ground) speed.
Clean the roller and scraper.
Replace roller.
Change mowing direction regularly.
Use traction control switch to transfer weight on or off cutting units.
Check/adjust engine speed.
Check hydraulic system performance (pump output, motor
operation, valve operation, relief valve settings, etc.).
Remedy