18in and 21in; 11-Blade and 14-Blade EdgeSeries™ Cutting Unit

Adjust the cut-off bar to ensure that the clippings are cleanly discharged from the reel area, as follows:

Note: The bar is adjustable to compensate for changes in turf conditions. Adjust the bar closer to the reel when the turf is extremely dry. By contrast, adjust the bar further away from the reel when the turf conditions are wet. The bar should be parallel to the reel to ensure optimum performance. Adjust it after sharpening the reel on a reel grinder.

1. Loosen the screws securing the top bar (Figure 4) to the cutting unit.

   

   Figure 4

   1. Cut-off bar

2. Insert a 1.5 mm (0.060 inch) feeler gauge between the top of the reel and the bar and tighten the screws.

   Important: Ensure that the bar and reel are equal distance apart across the complete reel.

1. Adjust the rear roller brackets to the desired height-of-cut range by positioning the required amount of spacers below the sideplate-mounting flange (Figure 7) per the Height-of-Cut and Bedknife Selection Charts.

   

   Figure 7

   1. Sideplate-mounting flange
   2. Spacer
   3. Roller bracket

2. Raise the rear of the cutting unit and place a block under the bedknife.

3. Remove the 2 nuts securing each roller bracket and spacer(s) to each sideplate-mounting flange.

4. Lower the roller bracket and bolts from the sideplate-mounting flanges and spacers.

5. Place the spacers onto the bolts on the roller brackets.

6. Secure the roller bracket and spacers to the underside of the mounting flanges with the nuts previously removed.

   Note: Place unused spacers on top of the sideplate-mounting flange for later use.

Note: The position of the rear roller to the reel is controlled by the machining tolerances of the assembled components and paralleling is not required.

Before adjusting the height of cut, set the height-of-cut gauge as follows:

1. Loosen the nut on the gauge bar and set the adjusting screw to the desired height of cut (Figure 8).

   Note: The distance between the bottom of the screw head and the face of bar is the height of cut.

   

   Figure 8

   1. Gauge bar
   2. Height-adjusting screw
   3. Nut

2. Tighten the nut.

This cutting unit comes standard with the Edgemax Micro-cut bedknife and standard bedbar. The effective height of cut depends on previous mower configurations and turf conditions (i.e., roller type, bedknife behind center distance, soft or firm greens, season conditions). Set the initial height of cut 0.25 mm to 0.38 mm (0.010 to 0.015 inch) higher than the previous greensmower setup and adjust it to match conditions.

Refer to Height-of-Cut and Bedknife Selection Charts to determine which bedknife is best suited for the desired height of cut.

1. Loosen the locknuts securing the height-of-cut arms to the cutting-unit side plates (Figure 9).

   

   Figure 9

   1. Adjusting screw
   2. Flange locknut
   3. Height-of-cut arm

2. Hook the screw head of the height-of-cut gauge bar onto the right side of the cutting edge of the bedknife and rest the rear end of the bar onto the rear roller (Figure 10).

   

   Figure 10

   1. Gauge bar

3. Rotate the adjusting screw until the roller contacts the front of the gauge bar.

4. Repeat steps 2 and for the left side.

5. Adjust both ends of the roller until the entire roller is parallel to the bedknife.

   Important: When set properly, the rear and front rollers contact the gauge bar and the screw is snug against the bedknife. This ensures that the height of cut is identical at both ends of the bedknife.

6. Tighten the locknuts on the height-of-cut arms to secure the adjustment enough to remove play from the washer.

7. Verify that the height-of-cut setting is correct; repeat this procedure if necessary

Only a properly trained mechanic should service the bedbar and bedknife to prevent damage to the reel, bedbar, or bedknife. Ideally, take the cutting unit to your authorized Toro distributor for service. Refer to the Service Manual for your traction unit for complete instructions, special tools, and diagrams for servicing the bedknife. Should you ever need to remove or assemble the bedbar yourself, instructions are provided below, as are the specifications for servicing the bedknife.

Important: Always follow the bedknife procedures detailed in your Service Manual when servicing the bedknife. Failure to install and grind the bedknife correctly can lead to damage to the reel, bedbar, or bedknife.

The angle that you use to grind your bedknives is very important.

Use the angle indicator (Toro Part No. 131-6828) and the angle-indicator mount (Toro Part No. 131-6829) to check the angle that your grinder produces and then correct for any grinder inaccuracy.

1. Place the angle indicator on the bottom side of the bedknife as shown in Figure 24.

   

   Figure 24

   1. Bedknife (vertical)
   2. Angle indicator

2. Press the Alt Zero button on the angle indicator.

3. Place the angle-indicator mount on the edge of the bedknife so that the edge of the magnet mates with the edge of the bedknife (Figure 25).

   Note: The digital display should be visible from the same side during this step as it was in step 1.

   

   Figure 25

   1. Angle-indicator mount
   2. Edge of the magnet mated with the edge of the bedknife
   3. Bedknife
   4. Angle indicator

4. Place the angle indicator on the mount as shown in Figure 25.

   Note: This is the angle that your grinder produces, and should be within 2 degrees of the recommended top grind angle.

1. Install the bedbar/bedknife assembly, positioning the mounting ears between the washers and the bedbar-adjusting screw (Figure 26).

   Important: Center the DPA adjusters in the bedbar ears as shown in Figure 26.If DPA adjusters are installed against the bedbar ears, this may negatively affect the bedknife-to-reel contact.

   

   Figure 26

   1. Bedbar ears
   2. DPA adjuster

2. Secure the bedbar to each side plate with the bedbar bolts (nuts on bolts) and 3 washers (6 total).

3. Position a nylon washer on each side of the side-plate boss. Place a steel washer outside each of the nylon washers (Figure 27).

4. Torque the bedbar bolts to 27 to 36 N∙m (20 to 27 ft-lb).

5. Tighten the locknuts until you remove the end play from steel washers, but you are able to rotate them by hand. The washers on the inside may have a gap.

   Important: Do not overtighten the locknuts or they will deflect the side plates.

6. Tighten the spring tension nut until the spring is collapsed, then back it off 1/2 turn (Figure 27).

   

   Figure 27

   1. Spring-tension nut
   2. Spring

7. Adjust the bedknife to the reel; refer to Adjusting the Bedknife to the Reel.

1. Ensure that all cutting unit components are in good condition and correct any issues before grinding.

2. Follow the reel grinder manufacturer’s instructions to grind the cutting reel to the following specifications.

   Reel Grinding Specifications
   New Reel Diameter	128.5 mm (5.06 inches)
   Reel Diameter Service Limit	114.3 mm (4.50 inches)
   Blade Relief Angle	30° ± 5°
   Blade Land Width Range	0.8 to 1.2 mm (0.03 to 0.05 inches)
   Reel Diameter Taper Service Limit	0.25 mm (0.010 inch)

The new reel has a land width of 0.8 to 1.2 mm (0.03 to 0.05 inch) and a 30° relief grind.

When the land width gets larger than 3 mm (0.120 inch) wide, do the following:

1. Apply a 30° relief grind on all reel blades until the land width is 0.8 mm (0.03 inch) wide

   

   Figure 28

   1. 30°
   2. 0.8 mm (0.03 inch)

2. Spin grind the reel to achieve <0.025 mm (0.001 inch) reel run-out.

   Note: This causes the land width to grow slightly.

3. Adjust the cutting unit; refer to your cutting unit Operator’s Manual.

Note: To extend the longevity of the sharpness of the edge of the reel and the bedknife—after grinding the reel and/or the bedknife—check the reel to bedknife contact again after cutting 2 greens, as any burrs will be removed. Burrs may create improper reel to bedknife clearance, which can accelerate wear.