Servicing The Air Cleaner - Toro 30520 Operator's Manual

Mid–size mower

Hide thumbs

Table Of Contents

Table of Contents

Warning

A blade that is bent or damaged could break apart

and could seriously injure or kill you or

bystanders.

Always replace bent or damaged blade with a

new blade.

Never file or create sharp notches in the edges

or surfaces of the blade.

Removing the Blades

Replace the blades if you hit a solid object or if the blades

are out of balance or bent. To ensure optimum performance

and continued safety conformance of the machine, use

genuine Toro replacement blades. Replacement blades

made by other manufacturers may result in

non-conformance with safety standards.

1. Hold the blade bolt with a wrench.

2. Remove the nut, blade bolt, cone washer, blade,

spacers, and thin washer from the spindle (Fig. 21).

Figure 21

1. Blade

2. Blade bolt

3. Cone washer

Sharpening the Blades

1. Use a file to sharpen the cutting edge at both ends of the

blade (Fig. 22). Maintain the original angle. The blade

retains its balance if the same amount of material is

removed from both cutting edges.

m–3779

4. Spacer

5. Thin washer

6. Nut

1. Sharpen at original angle

2. Check the balance of the blade by putting it on a blade

balancer (Fig. 23). If the blade stays in a horizontal

position, the blade is balanced and can be used. If the

blade is not balanced, file some metal off the end of the

sail area only (Fig. 22). Repeat this step until the blade

is balanced.

1. Blade

Installing the Blades

1. Place the blade onto the bolt and over the cone washer.

Select the proper number of spacer(s) for the height-of-

cut, and slide the bolt into the spindle (Fig. 21).

Important

The curved part of the blade must point

upward toward the inside of the mower to ensure proper

cutting.

2. Install the remaining spacer(s) and secure them with a

thin washer and a nut (Fig. 21).

3. Torque the blade bolt to 75–80 ft.-lb. (101–108 N m).