Service Manual

Greensmaster 3320/3420
DPA Cutting Units
Page 8 − 10
Set Up and Adjustments
Characteristics
CAUTION
Never install or work on the cutting units or cut-
ting unit suspension with the engine running. Al-
ways stop engine and remove key first. Also, dis-
connect the cutting unit power coupler to make
sure that cutting unit motors can not be unex-
pectedly engaged.
The dual knob bedknife−to−reel adjustment system in-
corporated in this cutting unit simplifies the adjustment
procedure needed to deliver optimum mowing perfor-
mance. The precise adjustment possible with this de-
sign gives the necessary control to provide a continual
self−sharpening action. This feature maintains sharp
cutting edges, assures good quality of cut and greatly
reduces the need for routine backlapping.
In addition, the rear roller positioning system allows for
various height-of-cut ranges and aggressiveness of cut
selections.
If a cutting unit is determined to be out of adjustment,
complete the following procedures in the specified order
to adjust the cutting unit properly.
1. Adjust the bedknife parallel to the reel.
2. Determine desired height−of−cut range and install
rear roller mounting shim(s) accordingly.
3. Adjust the height−of−cut.
See Cutting Unit Operator’s Manual for cutting unit ad-
justment procedures for your Greensmaster TriFlex Hy-
brid machine.