Toro 3000D manual Correcting Cutting Unit Mismatch

Correcting Cutting Unit Mismatch

If there is mismatch between the blades, the grass will appear streaked when it is cut. This problem can be cor- rected by making sure the blades are straight and all blades are cutting on the same plane.

1.Raise the height–of–cut to the highest position and lower deck to the floor.

2.Position machine on a level surface on the shop floor.

3.Shut engine off and engage the parking brake. Un- lock transport levers.

4.Position the tip of an outer blade and adjacent blade tip as close together as possible at the intersection of the two cutting chambers. Note the height of the outer blade tip with respect to the adjacent blade tip.

5.Rotate outer blade 180_ and note the height of the outer blade tip with respect to the adjacent blade tip. If the relative height changed by more than 1/8 inch (3 mm) after rotating blade, then outer blade is bent and should be replaced.

Note: When the blade cutting tips are rotated to their closest point, the blade in the forward chamber should be .20 ".13 inch (5 + 3 mm) above the blade of the more rearward chamber. This is caused by the tilting of each motor spindle in each individual chamber. The blade rake is accomplished by titling each spindle rather that tilting the entire deck. Even with this “apparent mis- match”, the after cut appearance will not show a mis- match because each chamber overlaps the adjacent chamber by 2 inch (51 mm).

6.Repeat steps 3 and 4 until all pairs of adjacent blades have been checked at both blade tips. Note the relative difference in blade height at each blade inter- section after replacing any bent blades. This height dif- ference should be less than 1/8 inch (3 mm) for all adjacent blades.

7.Rotate an outer blade until the tip is positioned to- ward the side of the deck housing. Measure the distance from the bottom of the blade to the floor. Repeat the measurement on the opposite side of the deck. If the two distances differ by more than 1/4 inch (6 mm) proceed to step 8 and add shims as instructed.

8.Remove capscrews, flatwashers, lockwashers and nuts from outer spindle in the area where shims must be added. To raise or lower the blade, add a shim, Part No. 3256–24, between spindle housing and bottom of cut- ting unit. Continue to check alignment of blades and add shims until tips of blades are within the required dimen- sion.

IMPORTANT: Do not use more than three shims at any one hole location. Use decreasing numbers of shims in adjacent holes if more than one shim is added to any one hole location.

Contour 82 Cutting Unit Page 10 – 14 Groundsmaster 3000/3000–D