Belt Cover Kit

1. Shut off the engine and wait for all moving parts to stop.

2. Disconnect the spark-plug wire from the spark plug and remove the electric-start button (if present).

3. Tip the machine onto its side with the air filter up.

4. Use a block of wood to hold the blade steady (Figure 1).

5. Remove the blade, saving all mounting hardware (Figure 1).

   

   Figure 1

6. Remove the belt from the blade drive and then remove and retain the blade drive (Figure 2).

   

   Figure 2

   1. Belt
   2. Blade drive

7. Remove and discard the metal belt guide and 2 corresponding bolts (Figure 3).

   

   Figure 3

   1. Metal belt guide (discard)
   2. Belt-guide bolts (discard)

8. Remove and discard the front belt cover; retain the corresponding bolts (Figure 4).

   

   Figure 4

   Model 20339 shown; appearance of machine varies

   1. Upper belt cover (discard)
   2. Upper belt-cover bolts (retain)

9. If needed, center punch and then use a 9/32-inch drill bit to drill 2 holes through the deck for installation of the belt covers.

   Note: Use the template at the back of these instructions for the appropriate hole orientation.

Parts needed for this procedure:

1. Install the 2 engine-mount bolts (3/8 x 1 inch) and torque them to 46 N∙m (34 ft-lb); refer to Figure 5.

   

   Figure 5

   1. Engine-mount bolts

2. Install the upper belt cover provided in this kit with the bolts previously removed.

   

   Figure 6

   1. Upper belt cover
   2. Upper belt-cover bolts

3. Install the blade drive and route the belt around it as shown in Figure 7.

   

   Figure 7

   1. Belt
   2. Blade drive

4. Install the lower belt cover by threading 2 bolts (1/4 x 1.33 inches) through the lower belt cover, through the holes drilled (if applicable), and into the upper belt cover.

   

   Figure 8

   1. Lower belt cover
   2. Lower belt-cover bolts

Important: You will need a torque wrench to install the blade properly. If you do not have a torque wrench or are uncomfortable performing this procedure, contact an Authorized Service Dealer.

1. Install the new blade and all mounting hardware (Figure 9).

   

   Figure 9

   Important: Position the curved ends of the blade to point toward the machine housing.

2. Use a torque wrench to tighten the blade bolt to 82 N∙m (60 ft-lb).

   Important: A bolt torqued to 82 N∙m (60 ft-lb) is very tight. While holding the blade with a block of wood, put your weight behind the ratchet or wrench and tighten the bolt securely. This bolt is very difficult to overtighten.

Important: If you are printing this from www.Toro.com, ensure that it is printed at 100% scale and that the distance from A to B is 1 inch: .

Figure 10

1. 3.1 mm (0.12 inch)
2. 4.8 mm (0.19 inch)
3. 1.5 mm (0.06 inch)
4. 7.1 mm (0.28 inch) diameter
5. 79 mm (3.11 inches)
6. 2.3 mm (0.09 inch)