Toro 20351 Quality Guide - Page 37

Checking and Adjusting the Blade Level 60-inch (152.4cm) Mower The mower blades should also be level side-to-side within about 3/16 inch (4.76mm). The adjustment is made on the gage wheels as shown (Figure 66). Adjusting Transport Blade Pitch Because the attachment lift is used when the PTO drive is engaged, blade pitch in transport must be adjusted to extend PTO drive belt life. This adjustment also provides for adequate transport height. In the transport position, the blade tip should be about 1/4 inch (6.3mm) lower in front than in the rear. If adjustment is necessary proceed as follows: 1. Start the tractor, lower the attachment lift to take pressure off the adjustment cams. Stop the engine and remove the key. 2. Loosen the cam nuts and equally rotate the left-hand and right-hand cams down to raise the front of the mower, or up to lower the front of the mower (Figure 68). Tighten the nuts. Repeat as necessary. Figure 66 1. Side-to-side adjustment bolts 5300-004.TIF Adjusting Front-to-Rear Pitch All the cutting units for this series tractor should be adjusted so that the blade is approximately 1/8 inch (3.1mm) lower in front. To adjust the pitch, turn the adjusting nut on the rear of the mower attachment. To raise the front of the mower, turn the adjustment nut clockwise. To lower the front of the mower, turn the nut counterclockwise (Figure 67). Figure 68 Right Side of Tractor Shown 5XI_tran.TIF 1. Indicator 2. Adjustment cam 3. Lift arm 4. Pivot point 5. Lowers front of mower 6. Raises front of mower 1. Adjusting nut Figure 67 5XI_F2R.TIF Service Dealer's Guide to Great Quality of Cut 4 - 21