Dixon 2003 - Manual (Page 25)

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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.
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 on 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.
Grass Types Best Cut Heights
Bermudagrass 1 - 2”
Bluegrass 2 - 3”
Buffalograss 1 1/2 -3”
Ryegrass 2 - 3”
Tall Fescue 3-3 1/2 ”
Zoysiagrass 1 - 3”