Jacobsen Standing Zero Turn Rotary Mower ZT90023, Руководство по безопасности, эксплуатации и техническому обслуживанию

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QUALITY OF CUT 12
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12Quality of Cut
12.1 QUALITY OF CUT PROBLEM SOLVING________________________________________
Make a “test cut” to check the performance of the mower before you start the repairs.
This area must have turf conditions that are known and do not change across the area. This type of area allows an
accurate inspection of the performance of the mower to be made.
Another “test cut” must be done after the repairs or adjustments to confirm the mower’s performance.
Before you do a “test cut” to show the appearance and performance of the mower, the following items must be
confirmed. These items make sure that the “test cut” is accurate.
1. Cut (Ground) Speed
2. Blade Sharpness
3. Height-of-Cut (HOC)
4. Blade Speed
12.2 WASHBOARDING__________________________________________________________
NOTE: Arrow indicates direction of travel.
Washboarding is a repeated pattern of different cutting
heights, that causes an appearance that is like a wave. In
most cases, the wave tip-to-tip distance is approximately
6-8 in. (15-20 cm). A change in the color (from light-to-
dark) is also seen.
This cause of this condition can be a movement from side
-to-side in the cutting unit. This condition is found on
mowers with cutting units held under the mower, but other
cause can give the same result.
Another cause of Washboarding is differences in the type
of turf.
Probable Cause Remedy
The cut (ground) speed is higher than normal. Reduce the cut (ground) speed.
Cut in the same direction. Change the direction of cut more frequently.
Not enough engine speed, engine speed is not set to
specification. Check/adjust the engine speed.
Belt Slipping. Check cutting unit belt adjustment.
TN0159