Dixon ZTR 6000 SERIES Operator's Manual page 24

OPERATION INSTRUCTIONS
GRASS HEIGHT AND CUTTING SUGGESTIONS:
Do not attempt to cut grass when it is wet.
If the grass is tall, place the mower deck cut height lever in the
top or second notch. "Initially" overlap cutting swaths instead
of a full swath with each pass. Some applications may require
a second cutting.
Keep the underside of the mower deck clean.
Maintain sharp blades throughout the cutting season.
As a rule of thumb, never cut off more than 1/3 of the total
grass blade length.
Correct mowing height can reduce weeds and disease by
50% to 80%.
The following grass cut heights are based an adequate
moisture conditions and normal thatch build-up in a healthy
lawn. Some locations and applications may require slightly
different cut heights. If in doubt, consult your local lawn
professional for assistance.
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Grass Types
Bermudagrass
Bluegrass
Buffalograss
Ryegrass
Tall Fescue
Zoysiagrass
Best Cut Heights
1 - 2"
2 - 3"
1 1/2 -3"
2 - 3"
3-3 1/2 "
1 - 3"