Setting Cutting Unit Attitude - Toro 03857 Operator's Manual

Setting Height of Cut
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1. Pivot hub
2. Pivot hub locknuts
3. Top adjusting nut
4. Bottom adjusting nut
5. Loosen the pivot hub lock nuts to allow
movement of the pivot hub (Fig. 8).
6. If the paper was not cut on the left side: loosen
the bottom adjusting nut on the pivot hub, then
turn the top adjusting nut clockwise to pull the
pivot hub up. OR If paper was not cut on the right
side: loosen the top adjusting nut on the pivot hub,
then turn the bottom adjusting nut counterclockwise
to push the pivot hub down (Fig. 8).
NOTE: To reduce thread play, always tighten the
bottom adjusting nut last.
7. Recheck the reel-to-bedknife contact on both ends
of the bedknife, and repeat step 6 as necessary.
NOTE: Reel-to-bedknife contact may become too
tight or too loose after the previous adjustment,
therefore, turn the bedknife adjustment knob,
accordingly, for lighter contact.
8. Retighten the pivot hub lock nuts.
NOTE: Recheck whether the paper still cuts on
both ends of the reel to insure the bedknife did not
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Figure 8
move when tightening the pivot hub lock nuts.
B. SETTING CUTTING UNIT ATTITUDE
IMPORTANT: Cutting unit "attitude" has a
significant impact on the performance of the cutting
unit. Attitude refers to the angle of the knife relative
to the ground (Fig. 8). Adjustable front and rear
brackets allow for variable adjustment of the cutting
unit attitude within the height-of-cut range. All
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cutting units on a machine must be set to the same
attitude. If they arenít, the after-cut appearance will
be negatively affected.
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1. Attitude
The best cutting unit attitude depends on your turf
conditions and desired results. Experience with the
cutting unit on your turf will determine the best setting
to use. Cutting unit attitude can be adjusted throughout
the cutting season to allow for various turf conditions.
In general, less aggressive attitudes (example: 2 degrees)
are more appropriate for warm season grasses while cool
season grasses may require more aggressive attitudes
(example: 6 degrees). More aggressive attitudes cut more
grass off by allowing the spinning reel to pull more grass
up into the bedknife. An angle that is too flat (attitude
less than 1 degree) may allow the bedbar or other parts
of the cutting unit to drag in the turf causing tufting.
Therefore, minimum recommended attitude is 1 degree.
For setting consistent cutting unit attitude, Toro strongly
recommends using a two-screw gauge bar, Toro part no.
Figure 9